Sum and Difference Identities
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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
Card Set Information
Author:
ChantelleVu
ID:
43587
Filename:
Sum and Difference Identities
Updated:
2010-10-20 02:55:24
Tags:
Trig Identities
Folders:
Description:
+ & - trig identities
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