Sum and Difference Formulas Flashcards by Diego Gryth

Q

What is sin(a ± b)?

A

sin(a) cos(b) ± cos(a) sin(b)

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Q

What is cos(a ± b)?

A

cos(a) cos(b) ∓ sin(a) sin(b)

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Q

What is tan(a ± b)?

A

(tan(a) ± tan(b)) / (1 ∓ tan(a) tan(b))

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