Lesson Playlist: Angle Sum and Difference Identities Mathematics

02:17
Using Subtraction Formula for Cosine Function to Solve a Trigonometric Equation Involving Special Angles

04:26
Using Sum and Difference of Angles Identities to Evaluate a Trigonometric Expression Involving Special Angles

01:20
Using the Tangent Sum or Difference of Angles Identity to Simplify a Trigonometric Expression

02:56
Evaluating a Trigonometric Function of the Sum of Two Angles given Their Cosine Functions and Quadrants

01:07
Using AngleSum and Difference Identities to Simplify Trigonometric Expressions

02:41
Using RightAngled Triangle Trigonometry to Evaluate the Tangent Function of the Sum of Two Angles in a Triangle

02:51
Using the Sum of Angle Identities to Solve Trigonometric Equations Modeling RealLife Situations

02:02
Proving the Addition Formula for Sine from its Subtraction Formula

05:14
Using SumtoProduct Identities

01:23
Solving Trigonometric Equations Using the Trigonometric Values of Special Angles