Sum & Difference Identities Flashcards by Caroline Bringhurst

Q

What are the 2 formulas?

A

sin ( A +/- B ) =
cos ( A +/- B ) =

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Q

sin ( A +/- B ) =

A

sin A cos B +/- cos A sin B

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Q

cos ( A +/- B ) =

A

cos A cos B -/+ sin A sin B

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