# Sine Sum and Difference Formulas

## Sine of a sum or difference related to a set of cosine and sine functions.

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## Sine Sum and Difference Formulas

by CK-12 //at grade
Derivation of the sine sum and difference formulas
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## Sum and Difference Identities for Sine

by CK-12 //at grade
Uses the sum and difference sine identities to determine values of functions.
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