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ChantelleVu
on FreezingBlue Flashcards.

cos(α + β) =
cosαcosβ  sinαsinβ

cos(α  β) =
cosαcosβ + sinαsinβ

sin(α + β) =
sinαcosβ + cosαsinβ

sin(α  β) =
sinαcosβ  cosαsinβ

tan(α + β) =
 _tanα + tanβ_
 1  tanαtanβ

tan(α  β) =
 _tanα  tanβ_
 1 + tanαtanβ

