Lesson Playlist: Angle Sum and Difference Identities Mathematics
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02:17Using Subtraction Formula for Cosine Function to Solve a Trigonometric Equation Involving Special Angles
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04:26
Using Sum and Difference of Angles Identities to Evaluate a Trigonometric Expression Involving Special Angles
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01:20
Using the Tangent Sum or Difference of Angles Identity to Simplify a Trigonometric Expression
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02:56
Evaluating a Trigonometric Function of the Sum of Two Angles given Their Cosine Functions and Quadrants
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01:07
Using Angle-Sum and -Difference Identities to Simplify Trigonometric Expressions
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02:41
Using Right-Angled Triangle Trigonometry to Evaluate the Tangent Function of the Sum of Two Angles in a Triangle
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02:51
Using the Sum of Angle Identities to Solve Trigonometric Equations Modeling Real-Life Situations
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02:02
Proving the Addition Formula for Sine from its Subtraction Formula
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05:14
Using Sum-to-Product Identities
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01:23
Solving Trigonometric Equations Using the Trigonometric Values of Special Angles
