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Home  /  Precalculus: Graphical, Numerical, Algebraic (10e, HS/AP edition)  /  Chapter 5 · Analytic Trigonometry
Section 5.3

Sum and Difference Identities

Sum and difference formulas for sine, cosine, and tangent; cofunction identities.

4 lessons. Pick what you need.

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Chapter 5 · Analytic Trigonometry
5.1 5.2 5.3 5.4 5.5 5.6
Lesson

Lesson on Proofs of Cos(A-B) and Cos(A+B)

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Lesson

Lesson of Exercises Using the Sum and Difference of Cosine Identities

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Lesson

Lesson on the Sum and Difference Identities for Sine and Tangent

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Examples

Examples Finding the Sine of a Sum and Tangent of a Sum

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