Trigonometry Videos

The section numbers below are for the Trigonometry book by Lial, Hornsby, Schneider, & Daniels. If your class is using a different book, just look at the titles instead of the section numbers.

Book Section Topic Video Title (ID Number, Author, Length)
1.1 Angles Angles (10191022, Sue Little, 46:01)
Introduction to Angles (20251001, Andrea Spalding, 7:06)
Coterminal Angles (20251002, Andrea Spalding, 6:38)
Finding Coterminal Angles with a Formula (20251003, Andrea Spalding, 3:35)
Finding Coterminal Angles of Least Positive Measure (20251004, Andrea Spalding, 3:44)
Introduction to Degrees, Minutes, and Seconds (20251005, Andrea Spalding, 6:24)
Calculations with Degrees, Minutes, and Seconds (20251015, Andrea Spalding, 3:50)
Converting DMS to Decimal Degrees (20251006, Andrea Spalding, 3:04)
Converting Decimal Degrees to DMS (20251007, Andrea Spalding, 4:04)
Converting Decimals into Minutes I (20121182, Ryan Braatz, 4:03)
Converting Decimals into Minutes II (20121183, Ryan Braatz, 1:50)
Converting Decimals into Minutes III (20121184, Ryan Braatz, 2:22)
Converting Minutes into Decimals I (20121185, Ryan Braatz, 3:08)
Converting Minutes into Decimals II (20121186, Ryan Braatz, 3:12)
Converting Minutes into Decimals III (20121187, Ryan Braatz, 3:01)
Finding All Coterminal Angles (20121202, Ryan Braatz, 2:34)
Finding Complementary and Supplementary Angles I (20121204, Ryan Braatz, 2:51)
Finding Complementary and Supplementary Angles II (20121205, Ryan Braatz, 2:22)
Finding Complementary Angles (20121208, Ryan Braatz, 2:07)
Finding Negative Coterminal Angles (20121210, Ryan Braatz, 2:21)
Finding Positive and Negative Coterminal Angles I (20121212, Ryan Braatz, 2:25)
Finding Positive and Negative Coterminal Angles II (20121213, Ryan Braatz, 3:42)
Finding Positive Coterminal Angles (20121216, Ryan Braatz, 1:53)
Finding Supplementary Angles (20121218, Ryan Braatz, 3:24)
Finding 2 Angles whose Difference is 1 Angle (20121115, Ryan Braatz, 1:11)
1.2 Angle Relationships and Similar Triangles Angle Relationships and Similar Triangles (10191021,Sue Little, 48:58)
Properties of Triangles and Similar Triangles (20251008, Andrea Spalding, 16:26)
Proving Cosine using Similar Triangles (20121267, Ryan Braatz, 3:03)
Proving Sine using Similar Triangles (20121268, Ryan Braatz, 5:00)
Similar Triangles I (20121269, Ryan Braatz, 1:55)
Similar Triangles II (20121270, Ryan Braatz, 2:12)
Similar Triangles III (20121271, Ryan Braatz, 5:13)
Similar Triangles IV (20121272, Ryan Braatz, 7:30)
Similar Triangles V (20121273, Ryan Braatz, 4:57)
1.3 Definitions of Trigonometric Functions and Function Values of the Quadrantal Angles Definitions of Trigonometric Functions and Function Values of the Quadrantal Angles (10191029, Sue Little, 1:37:51)
Intro to the Trigonometric Function Definitions (20251009, Andrea Spalding, 5:12)
Using the Trigonometric Function Definitions (20251010, Andrea Spalding, 11:38)
Trigonometric Function Values of Quadrantal Angles (20251011, Andrea Spalding, 12:52)
Find the Indicated Trigonometric Function Values I (20251012, Andrea Spalding, 4:06)
Find the Indicated Trigonometric Function Values II (20251013, Andrea Spalding, 4:11)
Basic on Trig Functions (20121114, Ryan Braatz, 2:43)
Signs for Cosine and Sine in Quadrants (20121239, Ryan Braatz, 4:43)
1.4 Reciprocal Identities The Reciprocal Identities (10191047, Sue Little, 17:48)
Reciprocal Identities (20251014, Andrea Spalding, 9:15)
1.4 Ranges of Function Values Ranges of Function Values (10191048, Sue Little, 22:01)
Range Values of the Trigonometric Functions (20251020, Andrea Spalding, 14:18)
Basics of Sine (20121220, Ryan Braatz, 5:24)
Domain of Cosine (20121221, Ryan Braatz, 3:05)
Domain of Sine (20121222, Ryan Braatz, 2:22)
Range of Cosine (20121237, Ryan Braatz, 3:05)
Range of Sine (20121238, Ryan Braatz, 2:46)
Range of Tangent (20121284, Ryan Braatz, 2:29)
1.4 Signs of Function Values Signs of Function Values (10191036, Sue Little, 1:23:23)
Signs of the Trigonometric Functions (20251015, Andrea Spalding, 15:31)
Looking at Cosine Values (20121234, Ryan Braatz, 2:05)
Tangent Values at the Axises (20121285, Ryan Braatz, 3:42)
Explaining Tangent Geometrically (20121280, Ryan Braatz, 5:51)
Finding Tangent Values (20121281, Ryan Braatz, 4:17)
Identifying Tangent (20121282, Ryan Braatz, 1:53)
1.4 The Pythagorean Identities and the Quotient Identities The Pythagorean Identities and the Quotient Identities (10191044, Sue Little, 54:14)
Pythagorean Identities (20251016, Andrea Spalding, 5:12)
Quotient Identities (20251017, Andrea Spalding, 2:56)
Using Identities to find Function Values (20251018, Andrea Spalding, 7:36)
Using Trig Function Definitions to Find Function Values (20251019, Andrea Spalding, 13:30)
Verifying Pythagorean Identities (20121257, Ryan Braatz, 2:59)
2.1 Trigonometric Functions of Acute Angles Trigonometric Functions of Acute Angles (10191045, Sue Little, 39:49)
Right Triangle Based Definitions of the Trig Functions (20251021, Andrea Spalding, 10:45)
2.1 Exact Trigonometric Functions of Special Angles Exact Trigonometric Functions of Special Angles (10191030, Sue Little, 41:08)
Special Triangles and the Trig. Function Values of 30, 45, and 60 Degrees (20251022, Andrea Spalding, 13:34)
Cofunction Identities (20251023, Andrea Spalding, 6:11)
Evaluating Secant at 60 Degrees (20121198, Ryan Braatz, 3:45)
Finding the Cosine and Sine of 30 Degrees (20121252, Ryan Braatz, 3:39)
Estimating Cosine Values I (20121223, Ryan Braatz, 2:38)
Estimating Cosine Values II (20121224, Ryan Braatz, 2:31)
Estimating Cosine Values III (20121225, Ryan Braatz, 1:26)
Estimating Cosine Values IV (20121226, Ryan Braatz, 1:38)
Estimating Sine Values I (20121227, Ryan Braatz, 2:20)
Estimating Sine Values II (20121228, Ryan Braatz, 3:15)
Estimating Sine Values III (20121229, Ryan Braatz, 2:01)
Estimating Sine Values IV (20121230, Ryan Braatz, 1:23)
Evaluating Tangent Angles (20121275, Ryan Braatz, 1:40)
Evaluating Tangent at the Axises (20121278, Ryan Braatz, 2:44)
Evaluating with Negative Tangent Angles (20121279, Ryan Braatz, 2:06)
2.2 Trigonometric Functions of Non-Acute Angles Trigonometric Functions of Non-Acute Angles (10191046, Sue Little, 39:04)
Reference Angles (20251024, Andrea Spalding, 13:49)
Finding Trig Function Values of Non-Acute Angles Using Reference Angles (20251025, Andrea Spalding, 16:37)
Finding Trig Function Values for Any Nonquadrantal Angle (20251026, Andrea Spalding, 7:31)
Finding Angle Measures Given an Interval and a Function Value (20251027, Andrea Spalding, 12:27)
Reference Angle Families (20251028, Andrea Spalding, 0:58)
2.3 Finding Trigonometric Function Values Using A Calculator Finding Trigonometric Function Values Using A Calculator (10191031, Sue Little, 46:09)
Finding Trig function Values Using a Calculator (20251029, Andrea Spalding, 15:01)
Finding Cosine values with Calculator I (20121231, Ryan Braatz, 1:54)
Finding Cosine values with Calculator II (20121232, Ryan Braatz, 2:25)
Finding Sine Values with Calculator (20121233, Ryan Braatz, 4:16)
2.4 & 2.5 Solving Right Triangles Solving Right Triangles (10191042, Sue Little, 57:28)
Solving Right Triangles (20251030, Andrea Spalding, 17:35)
Definition of the Angle of Elevation and Angle of Depression (20251031, Andrea Spalding, 1:07)
Applications of Angles of Elevation and Depression (20251032, Andrea Spalding, 10:39)
Applications of Right Triangles (10191024, Sue Little, 45:56)
More Applications of Right Triangles (10191033, Sue Little, 1:07:03)
Angle of Depression (20121258, Ryan Braatz, 6:09)
Angle of Elevation with Similar Triangles (20121259, Ryan Braatz, 7:32)
Angle of Elevation (20121260, Ryan Braatz, 2:08)
3.1 & 3.2 Radian Measure Radian Measure (10191035, Sue Little, 57:28)
Introduction to Radian Measure (20251033, Andrea Spalding, 7:48)
Converting Between Radians and Degrees (20251034, Andrea Spalding, 7:50)
Labeling Segments of pi/6 Radians (20251035, Andrea Spalding, 1:45)
Labeling Segments of pi/3 Radians (20251036, Andrea Spalding, 0:41)
Labeling Segments of pi/4 Radians (20251037, Andrea Spalding, 0:48)
Finding Function Values of Radian Measures (20251038, Andrea Spalding, 16:11)
Finding Arc Length (20251039, Andrea Spalding, 5:28)
Finding the Distance Between Two Cities (20251040, Andrea Spalding, 5:07)
Rotating Gears (20251041, Andrea Spalding, 5:18)
Pulley Raising a Weight (20251042, Andrea Spalding, 3:47)
Applications of Radian Measure (10191023, Sue Little, 40:08)

Converting Degrees into Radians I (20121188, Ryan Braatz, 3:54)
Converting Degrees into Radians II (20121189, Ryan Braatz, 2:42)
Converting Degrees into Radians III (20121190, Ryan Braatz, 1:51)
Converting Degrees into Radians IV (20121191, Ryan Braatz, 1:27)
Converting Degrees into Radians V (20121192, Ryan Braatz, 4:57)
Converting Radians into Degrees I (20121193, Ryan Braatz, 1:45)
Converting Radians into Degrees II (20121194, Ryan Braatz, 4:00)
Converting Radians into Degrees III (20121195, Ryan Braatz, 1:56)
Converting Radians into Degrees IV (20121196, Ryan Braatz, 1:25)
Converting Radians into Degrees V (20121197, Ryan Braatz, 3:19)

Evaluating with Radians I (20121199, Ryan Braatz, 5:16)
Evaluating with Radians II (20121200, Ryan Braatz, 3:41)
Explaining Radians (20121201, Ryan Braatz, 0:44)
Finding all Coterminal Radians (20121203, Ryan Braatz, 1:55)
Finding Complementary and Supplementary Radians I (20121206, Ryan Braatz, 2:34)
Finding Complementary and Supplementary Radians II (20121207, Ryan Braatz, 4:23)
Finding Complementary Radians (20121209, Ryan Braatz, 2:56)
Finding Negative Coterminal Radians (20121211, Ryan Braatz, 1:02)
Finding Positive and Negative Coterminal Radians I (20121214, Ryan Braatz, 3:39)
Finding Positive and Negative Coterminal Radians II (20121215, Ryan Braatz, 2:16)
Finding Positive Coterminal Radians (20121217, Ryan Braatz, 1:42)
Finding Supplementary Radians (20121219, Ryan Braatz, 2:54)
Evaluating Tangent Radians I (20121276, Ryan Braatz, 3:40)
Evaluating Tangent Radians II (20121277, Ryan Braatz, 1:53)

3.3 Circular Functions of Real Numbers Circular Functions of Real Numbers (10191026, Sue Little, 1:29:49)
Circular Function Definitions and the Unit Circle (20251043, Andrea Spalding, 11:43)
Using the Unit Circle (20251044, Andrea Spalding, 3:21)
Using the Unit Circle to Find Function Values (20251045, Andrea Spalding, 8:18)
Using the Calculator in Radian Mode (20251046, Andrea Spalding, 5:53)
Using the Unit Circle to Find Angles in Radians Within a Given Interval (20261047, Andrea Spalding, 9:49)
3.4 Linear and Angular Velocity Linear and Angular Velocity (10171086, Myrna Clark, 56:15)
Angular Velocity I (20121261, Ryan Braatz, 4:14)
Angular Velocity II (20121262, Ryan Braatz, 4:41)
Linear Speed I (20121263, Ryan Braatz, 7:03)
Linear Speed II (20121264, Ryan Braatz, 8:39)
Linear Speed III (20121265, Ryan Braatz, 6:34)
Linear Velocity (20121266, Ryan Braatz, 5:45)
4.1 & 4.2 Graphing Trig Functions: Sine and Cosine Graphing Trig Functions Sine and Cosine (20111196, Ellen Turnell, 15:45)
Graph of the Sine and Cosine I 10171040, (Myrna Clark, 51:14)
Graph of Sine and Cosine II (10171041, Myrna Clark, 30:00)
Basic Graph of y = sin x (20251048, Andrea Spalding, 8:57)
Basic Graph of y = cos x (20251049, Andrea Spalding, 6:41)
Change in Amplitude (20251050, Andrea Spalding, 5:57)
Change in Amplitude Examples (20251051, Andrea Spalding, 5:49)
Change in Period (20251052, Andrea Spalding, 9:35)
Change in Period Examples (20251053, Andrea Spalding, 14:04)
Change in Amplitude and Period (20251054, Andrea Spalding, 17:51)
Vertical Shift (20251055, Andrea Spalding, 7:37)
Phase Shift (20251056, Andrea Spalding, 11:20)
Graphing General Sine/Cosine Equations (20251057, Andrea Spalding, 34:39)
Graphing Cosine (20121017, Ryan Braatz, 1:38)
Graphing Sine (20121018, Ryan Braatz, 2:55)
Relationship between Unit Circle and the Sine Function (20121020, Ryan Braatz, 5:32)

Using a Calculator to graph Sine, Cosine and Tangent Function (20121022, Ryan Braatz, 5:35)
Using Maple and Websites to Graph Basic Functions (20121023, Ryan Braatz, 5:15)
Finding Phase Shift with Maple I (20121001, Ryan Braatz, 5:44)
Finding Phase Shift with Maple III (20121003, Ryan Braatz, 4:27)
Finding Phase Shift (20121004, Ryan Braatz, 7:26)
Finding the Amplitude I (20121005, Ryan Braatz, 1:08)
Finding the Amplitude II (20121006, Ryan Braatz, 0:29)
Finding the Period I (20121007, Ryan Braatz, 3:02)
Finding the Period III (20121009, Ryan Braatz, 1:12)
Graphing Trig Functions I (20121010, Ryan Braatz, 4:23)
Graphing Trig Functions II (20121011, Ryan Braatz, 1:34)
Graphing Trig Functions with Maple I (20121012, Ryan Braatz, 8:07)
Graphing Trig Functions with Maple III (20121014, Ryan Braatz, 8:41)

4.3 Graphs of Tangent and Cotangent Tangent and Cotangent Graphs (20111197, Ellen Turnell, 9:42)
Graphs of Tangent and Cotangent (10171042, Myrna Clark, 53:54)
Graph of Tangent (20251058, Andrea Spalding, 11:06)
Graph of Cotangent (20251059, Andrea Spalding, 4:25)
Variations of Tangent and Cotangent (20251060, Andrea Spalding, 21:47)
Limits of Tangent (20121019, Ryan Braatz, 4:35)
Restrictions and Domain of Tangent (20121021, Ryan Braatz, 3:30)
Domain and Range of Cotangent (20121178, Ryan Braatz, 3:25)
Domain of Tangent (20121274, Ryan Braatz, 5:23)
Finding Phase Shift with Maple II (20121002, Ryan Braatz, 3:39)
Finding the Period II (20121008, Ryan Braatz, 1:10)
Graphing Trig Functions with Maple II (20121013, Ryan Braatz, 12:25)
Graphing Trig Functions with Maple IV (20121015, Ryan Braatz, 10:06)
4.4 Graphs of Secant and Cosecant Secant and Cosecant Graphs (20111198, Ellen Turnell, 8:27)
Graphs of Secant and Cosecant (10171039, Myrna Clark, 26:31)
Graph of Cosecant (20251061, Andrea Spalding, 11:43)
Graph of Secant (20251062, Andrea Spalding, 9:46)
Graphing Variations of Secant and Cosecant (20251063, Andrea Spalding, 14:55)
Domain and Range of Cosecant (20121177, Ryan Braatz, 3:53)
Graphing Secant and Cosecant (20121179, Ryan Braatz, 3:24)
Domain and Range of Secant (20121180, Ryan Braatz, 5:01)
Using Reciprocal Functions (20121181, Ryan Braatz, 3:25)
Vertical Asymptotes of Secant Function (20121165, Ryan Braatz, 4:16)
Finding the Period III (20121009, Ryan Braatz, 1:12)
5.1 Fundamental Identities Fundamental Identities (20251064, Andrea Spalding, 20:06)
5.2 Proving Trigonometric Identities Proving Trigonometric Identities (10171062, Myrna Clark, 1:03:14)
Verifying Trigonometric Identities (20251065, Andrea Spalding, 44:35)

Proving Basic Identities Ex 1 (20121049, Ryan Braatz, 0:24)
Proving Basic Identities Ex 2 (20121050, Ryan Braatz, 2:51)
Proving Basic Identities Ex 3 (20121051, Ryan Braatz, 1:36)
Proving Basic Identities Ex 4 (20121052, Ryan Braatz, 1:46)
Proving Basic Identities Ex 5 (20121053, Ryan Braatz, 2:40)
Proving Basic Identities Ex 6 (20121054, Ryan Braatz, 1:40)
Proving Basic Identities Ex 7 (20121055, Ryan Braatz, 2:05)
Proving Basic Identities Ex 8 (20121056, Ryan Braatz, 2:40)
Proving Basic Identities Ex 9 (20121057, Ryan Braatz, 1:24)
Proving Basic Identities Ex 10 (20121058, Ryan Braatz, 2:56)
Proving Basic Identities Ex 11 (20121059, Ryan Braatz, 2:44)
Proving Basic Identities Ex 12 (20121060, Ryan Braatz, 2:22)
Proving Basic Identities Ex 13 (20121061, Ryan Braatz, 2:14)
Proving Basic Identities Ex 14 (20121062, Ryan Braatz, 2:06)
Proving Basic Identities Ex 15 (20121063, Ryan Braatz, 1:42)

Proving Intermediate Identities Ex 1 (20121064, Ryan Braatz, 5:52)
Proving Intermediate Identities Ex 2 (20121065, Ryan Braatz, 5:48)
Proving Intermediate Identities Ex 3 (20121066, Ryan Braatz, 3:35)
Proving Intermediate Identities Ex 4 (20121067, Ryan Braatz, 4:52)
Proving Intermediate Identities Ex 5 (20121068, Ryan Braatz, 5:24)
Proving Intermediate Identities Ex 6 (20121069, Ryan Braatz, 5:14)
Proving Intermediate Identities Ex 7 (20121070, Ryan Braatz, 3:12)
Proving Intermediate Identities Ex 8 (20121071, Ryan Braatz, 3:53)
Proving Intermediate Identities Ex 9 (20121072, Ryan Braatz, 4:06)
Proving Intermediate Identities Ex 10 (20121073, Ryan Braatz, 4:23)
Proving Intermediate Identities Ex 11 (20121074, Ryan Braatz, 3:10)
Proving Intermediate Identities Ex 12 (20121075, Ryan Braatz, 4:18)
Proving Intermediate Identities Ex 13 (20121076, Ryan Braatz, 3:32)
Proving Intermediate Identities Ex 14 (20121077, Ryan Braatz, 5:28)
Proving Intermediate Identities Ex 15 (20121078, Ryan Braatz, 4:54)

Proving Complex Identities Ex 1 (20121079, Ryan Braatz, 6:45)
Proving Complex Identities Ex 2 (20121080, Ryan Braatz, 14:57)
Proving Complex Identities Ex 3 (20121081, Ryan Braatz, 6:40)
Proving Complex Identities Ex 4 (20121082, Ryan Braatz, 7:50)
Proving Complex Identities Ex 5 (20121083, Ryan Braatz, 6:31)
Proving Complex Identities Ex 6 (20121084, Ryan Braatz, 7:31)
Proving Complex Identities Ex 7 (20121085, Ryan Braatz, 6:26)
Proving Complex Identities Ex 8 (20121086, Ryan Braatz, 6:04)
Proving Complex Identities Ex 9 (20121087, Ryan Braatz, 7:22)
Proving Complex Identities Ex 10 (20121088, Ryan Braatz, 9:19)
Proving Complex Identities Ex 11 (20121089, Ryan Braatz, 9:49)

5.3 Sum and Difference Identities For Cosine Sum and Difference Identities For Cosine (10171072, Myrna Clark, 1:03:15)
Finding Exact Cosine Values (20251066, Andrea Spalding, 14:38)
Reducing cos (A-B) to a Function of a Single Variable (20251067, Andrea Spalding, 7:33)
Finding cos (s+t) or cos( s-t) Given Information About s and t (20251068, Andrea Spalding, 12:42)
Verifying Identities Using the Sum Identity for Cosine (20251069, Andrea Spalding, 4:40)
Finding the Exact Values (20121117, Ryan Braatz, 3:43)
Using Difference Identity Cosine I (20121133, Ryan Braatz, 4:46)
Using Difference Identity Cosine II (20121134, Ryan Braatz, 3:22)
Using Difference Identity Cosine III (20121135, Ryan Braatz, 5:55)
Using Difference Identity Cosine IV (20121136, Ryan Braatz, 2:07)
Using Difference Identity Cosine V (20121137, Ryan Braatz, 1:16)
Using Difference Identity Cosine VI (20121138, Ryan Braatz, 3:56)
5.4 Sum and Difference Identities for Sine and Tangent Sum and Difference Identities for Sine and Tangent (10171073, Myrna Clark, 55:33)
Sum and Difference Identities for Sine and Tangent (20251070, Andrea Spalding, 16:24)
Finding All Values for Sum and Difference Identities (20121116, Ryan Braatz, 10:13)
Finding the Exact Values using Difference Identity I (20121118, Ryan Braatz, 4:05)
Finding the Exact Values using Difference Identity II (20121119, Ryan Braatz, 5:15)
Finding the Exact Value using the Sum Identity (20121120, Ryan Braatz, 8:29)
Using Sum and Difference Identities (20121139, Ryan Braatz, 3:36)
5.5 Double-Angle Identities Double-Angle Identities (10171027, Myrna Clark, 1:23:36)
Double Angle Identities for Cosine (20251071, Andrea Spalding, 7:41)
Double Angle Identities for Sine and Tangent (20251072, Andrea Spalding, 2:08)
Using the Double Angle Identities to Simplify Expressions (20251073, Andrea Spalding, 8:39)
Solving for cos(2x) and sin(2x) Values Using Double Angle Identities (20251074, Andrea Spalding, 9:56)
Solving for cos(x) and sin(x) Values Using Double Angle Identities (20251075, Andrea Spalding, 9:04)
Verify Identities That Require Use of Double Angle Identities (20251076, Andrea Spalding, 7:44)
Double Angles I (20121032, Ryan Braatz, 3:01)
Double Angles II (20121033, Ryan Braatz, 1:59)
Double Angles III (20121034, Ryan Braatz, 3:11)
Double Angles IV (20121035, Ryan Braatz, 12:02)
Double Angles V (20121036, Ryan Braatz, 5:49)
5.6 Half-Angle Identities Half-Angle Identities (10171043, Myrna Clark, 47:17)
Half-Angle Identities (20251077, Andrea Spalding, 22:22)
Half Angles I (20121037, Ryan Braatz, 5:48)
Half Angles II (20121038, Ryan Braatz, 10:39)
Half Angles III (20121039, Ryan Braatz, 12:01)
Half Angles IV (20121040, Ryan Braatz, 9:25)
Half Angles V (20121041, Ryan Braatz, 2:39)
Using Double and Half Angle (20121045, Ryan Braatz, 8:21)
6.1 Inverse Trig Functions Inverse Trig Functions (10171049, Myrna Clark, 1:16:37)
Review of Inverse Functions (20251078, Andrea Spalding, 9:51)
Inverse Sine Function (20251079, Andrea Spalding, 6:19)
Inverse Cosine Function (20251080, Andrea Spalding, 3:46)
Inverse Tangent Function (20251081, Andrea Spalding, 3:12)
Finding Inverse Trigonometric Function Values (20251082, Andrea Spalding, 11:06)
Finding Function Values Using Trig Function Definitions (20251083, Andrea Spalding, 6:39)
Finding Function Values Using Identities (20251084, Andrea Spalding, 6:54)
Domain and Range of Arcsine (20121046, Ryan Braatz, 4:10)
Graphing Sine and Arcsine (20121047, Ryan Braatz, 3:46)
Graphing Sine and Arcsine with Maple (20121048, Ryan Braatz, 3:19)
Graphing the Arcsine Function (20121163, Ryan Braatz, 10:36)
Finding Angles using the Inverse I (20121147, Ryan Braatz, 5:26)
Finding Angles using the Inverse II (20121148, Ryan Braatz, 4:59)
Finding Angles using the Inverse III (20121149, Ryan Braatz, 2:51)
Finding Angles using the Inverse IV (20121150, Ryan Braatz, 6:49)
Finding Angles using the Inverse V (20121151, Ryan Braatz, 2:35)
Finding Angles using the Inverse VI (20121152, Ryan Braatz, 3:49)
Finding Angles using the Inverse VII (20121245, Ryan Braatz, 4:45)
6.2 & 6.3 Solving Trigonometric Equations Solving Trigonometric Equations (10171089, Myrna Clark, 1:20:26)
Solving Trigonometric Equations with Multiple Angles (10171090, Myrna Clark, 54:08)
Solving Trig Equations, # 1-6 (20111199, Ellen Turnell, 15:25)
Solving Trig Equations # 7-9 (20111200, Ellen Turnell, 9:43)
Solving Trig Equations with Identities # 1-4 (20111201, Ellen Turnell, 17:25)
Solving Trig Equations with Identities # 5-11 (20111202, Ellen Turnell, 15:35)

Overview of Methods Used to Solve Trigonometric Equations (20251085, Andrea Spalding, 5:15)
Trigonometric Equations Method: Linear Equation Methods (20251086, Andrea Spalding, 9:39)
Trigonometric Equations Method: Square Root Method (20251087, Andrea Spalding, 6:35)
Trigonometric Equations Method: Factoring (20251088, Andrea Spalding, 20:59)
Trigonometric Equations Method: Using Identities (20251089, Andrea Spalding, 15:47)
Trigonometric Equations Method: Quadratic formula (20251090, Andrea Spalding, 10:51)
Trigonometric Equations Method: Squaring Both Sides and Using Identities (20251091, Andrea Spalding, 11:43)
Solving Equations with a Multiple Angle (20251092, Andrea Spalding, 27:15)
Solving Equations with a Half Angle (20251093, Andrea Spalding, 13:25)
Solving Multiple Angle Equations with Various Methods (20251094, Andrea Spalding, 19:28)

Solving Basic Trig Equations Ex 1 (20121097, Ryan Braatz, 4:14)
Solving Basic Trig Equations Ex 2 (20121098, Ryan Braatz, 5:03)
Solving Basic Trig Equations Ex 3 (20121099, Ryan Braatz, 12:29)
Solving Basic Trig Equations Ex 4 (20121100, Ryan Braatz, 3:54)
Solving Basic Trig Equations Ex 5 (20121101, Ryan Braatz, 9:36)

Solving Intermediate Trig Equations Ex 1 (20121102, Ryan Braatz, 4:25)
Solving Intermediate Trig Equations Ex 2 (20121103, Ryan Braatz, 13:30)
Solving Intermediate Trig Equations Ex 3 (20121104, Ryan Braatz, 12:00)
Solving Intermediate Trig Equations Ex 4 (20121105, Ryan Braatz, 7:17)
Solving Intermediate Trig Equations Ex 5 (20121106, Ryan Braatz, 4:32)
Solving Intermediate Trig Equations Ex 6 (20121107, Ryan Braatz, 4:50)
Solving Intermediate Trig Equations Ex 7 (20121108, Ryan Braatz, 7:17)
Solving Intermediate Trig Equations Ex 8 (20121109, Ryan Braatz, 12:10)
Solving Intermediate Trig Equations Ex 9 (20121110, Ryan Braatz, 11:00)
Solving Intermediate Trig Equations Ex 10 (20121111, Ryan Braatz, 11:26)
Solving Intermediate Trig Equations Ex 11 (20121112, Ryan Braatz, 5:50)
Solving Intermediate Trig Equations Ex 12 (20121113, Ryan Braatz, 14:57)

7.1 & 7.2 Law of Sines Law of Sines (10171051, Myrna Clark, 1:03:42)
Law of Sines (20151095, Andrea Spalding, 26:07)
The Ambiguous Case of the Law of Sines (20251096, Andrea Spalding, 34:02)
Law of Sines Ambiguous Cases (One Solution) (20121168, Ryan Braatz, 8:57)
Law of Sines Ambiguous Cases (Two Solutions and No Solutions) (20121169, Ryan Braatz, 9:04)
Law of Sines I (20121170, Ryan Braatz, 9:27)
Law of Sines II (20121171, Ryan Braatz, 6:36)
Law of Sines III (20121172, Ryan Braatz, 5:55)
Law of Sines IV (20121173, Ryan Braatz, 8:09)
Law of Sines V (20121174, Ryan Braatz, 12:55)
Law of Sines VI (20121175, Ryan Braatz, 5:53)
Proving Law of Sines (20121176, Ryan Braatz, 5:26)
7.3 Law of Cosines Law of Cosines (10171050, Myrna Clark, 38:11)
Properties of Triangles (20251097, Andrea Spalding, 5:24)
Introduction to the Law of Cosines (20251098, Andrea Spalding, 13:12)
Overview of Steps to Solve Oblique Triangles (20251099, Andrea Spalding, 2:02)
Solving Oblique Triangles Given SSS (20251101, Andrea Spalding, 17:48)
Solving Oblique Triangles Given SAS (20251102, Andrea Spalding, 16:00)
Law of Cosine I (20121166, Ryan Braatz, 9:30)
Law of Cosine II (20121167, Ryan Braatz, 4:23)
7.4 & 7.5
Vectors Basics of Vectors (20111182, Ellen Turnell, 12:28)
Magnitude and Direction of Vectors (20111183, Ellen Turnell, 17:58)
Vectors and Applications (10171092, Myrna Clark, 43:48)
8.1 Complex Numbers Complex Numbers (10191028, Sue Little, 43:09)
8.2 Trigonometric Form of Complex Numbers Trigonometric Form of Complex Numbers (10171091, Myrna Clark, 37:14)
8.3 Product and Quotient Theorems Product and Quotient Theorems (10171088, Myrna Clark, 32:29)
8.4 Powers and Roots of Complex Numbers Powers and Roots of Complex Numbers (10171087, Myrna Clark, 46:21)
Product to Sum Product to Sum I (20121090, Ryan Braatz, 1:38)
Product to Sum II (20121091, Ryan Braatz, 1:05)
Product to Sum III (20121092, Ryan Braatz, 1:00)
Product to Sum IV (20121093, Ryan Braatz, 1:25)
Product to Sum V (20121094, Ryan Braatz, 1:05)
Product to Sum Proof I (20121095, Ryan Braatz, 4:03)
Product to Sum Proof II (20121096, Ryan Braatz, 3:29)
Sum/Difference to Product Difference to Product of Cosine (20121140, Ryan Braatz, 0:59)
Difference to Product of Sine (20121141, Ryan Braatz, 2:54)
Sum to Product Cosine (20121144, Ryan Braatz, 2:03)
Sum to Product Sine (20121145, Ryan Braatz, 2:01)
Sinusoidal Functions Finding the Sinusoidal Function (20121286, Ryan Braatz, 14:43)
Finding All Values Finding All Values of Theta I (20121240, Ryan Braatz, 2:38)
Finding All Values of Theta II (20121241, Ryan Braatz, 3:09)
Finding All Values of Theta III (20121242, Ryan Braatz, 6:28)
Finding All Values of Theta IV (20121243, Ryan Braatz, 4:11)
Finding All Values of Theta V (20121244, Ryan Braatz, 2:16)
Finding Other Functions Values Given One Value I (20121246, Ryan Braatz, 4:45)
Finding Other Functions Values Given One Value II (20121247, Ryan Braatz, 2:42)
Finding Other Functions Values Given One Value III (20121248, Ryan Braatz, 6:07)
Finding Other Functions Values Given One Value IV (20121249, Ryan Braatz, 5:04)
Finding Other Functions Values Given One Value V (20121250, Ryan Braatz, 7:03)
Finding Other Functions Values Given one Value VI (20121251, Ryan Braatz, 4:26)
Proofs Proving Pythagorean Identities I (20121253, Ryan Braatz, 3:26)
Proving Pythagorean Identities II (20121254, Ryan Braatz, 1:34)
Proving Pythagorean Identities III (20121255, Ryan Braatz, 1:10)
Proving Pythagorean Identities IV (20121256, Ryan Braatz, 6:07)
Proving Double Angle Identities I (20121042, Ryan Braatz, 3:31)
Proving Double Angle Identities II (20121043, Ryan Braatz, 10:48)
Proving Half Angle Identities (20121044, Ryan Braatz, 0:54)
Double Angle Proof of Cosine (20121030, Ryan Braatz, 3:19)
Double Angle Proof of Sine (20121031, Ryan Braatz, 2:10)
Proving Cosine as an Even Function (20121235, Ryan Braatz, 2:57)
Proving Sine as an Odd Function (20121236, Ryan Braatz, 2:32)
Proving the Tangent Identity (20121283, Ryan Braatz, 4:29)

Proof of Difference Identity Cosine (20121121, Ryan Braatz, 11:41)
Proof of Difference Identity Sine (20121122, Ryan Braatz, 6:23)
Proof of Difference Identity Tangent (20121123, Ryan Braatz, 4:05)
Proof of Sum Identity Cosine (20121124, Ryan Braatz, 5:52)
Proof of Sum Identity Sine (20121125, Ryan Braatz, 6:36)
Proof of Sum Identity Tangent (20121126, Ryan Braatz, 7:35)
Proving Cofunction Identities (20121127, Ryan Braatz, 1:24)
Proving Sum and Difference Identities I (20121128, Ryan Braatz, 1:51)
Proving Sum and Difference Identities II (20121129, Ryan Braatz, 2:28)
Proving Sum and Difference Identities III (20121130, Ryan Braatz, 3:44)
Proving Sum and Difference Identities IV (20121131, Ryan Braatz, 2:43)
Proving Sum and Difference Identities V (20121132, Ryan Braatz, 1:43)
Proving Sum to Product Identities (20121142, Ryan Braatz, 2:04)
Proving the Difference to Product of Sine (20121143, Ryan Braatz, 1:44)

Final Review Final Review Problems 1-8 (20121024, Ryan Braatz, 16:24)
Final Review Problems 10-15 (20121025, Ryan Braatz, 15:49)
Final Review Problems 16-19 (20121026, Ryan Braatz, 14:23)
Final Review Problems 20-25 (20121027, Ryan Braatz, 13:49)
Final Review Problems 28-29 (20121028, Ryan Braatz, 15:53)
Final Review Problem 30 (20121029, Ryan Braatz, 19:36)