5.3 (Sum & Difference Formulas) Flashcards

1
Q

What is the cosine sum and difference formula?

A

cos(α +/- β)=cosαcosβ -/+ sinαsinβ

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2
Q

What is the sine sum and difference formula?

A

sin(α +/- β)=sinαcosβ +/- cosαsinβ

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3
Q

What is the tangent sum and difference formula?

A

tan(α +/- β)=(tanα +/- tanβ)/(1 -/+ tanαtanβ)

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