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# Sum to Product Formulas for Sine and Cosine

## Relation of the sum or difference of two trigonometric functions to a product.

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## Sum to Product Formulas for Sine and Cosine

Examples of transforming a sum of trigonometric functions to a product of trigonometric functions

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## Sum to Product and Product to Sum Identities

Uses trigonometric identities to rewrite trigonometric expressions and evaluate functions.

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