Sum and Difference Identities

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The flashcards below were created by user ChantelleVu on FreezingBlue Flashcards.


  1. cos(α + β) =
    cosαcosβ - sinαsinβ
  2. cos(α - β) =
    cosαcosβ + sinαsinβ
  3. sin(α + β) =
    sinαcosβ + cosαsinβ
  4. sin(α - β) =
    sinαcosβ - cosαsinβ
  5. tan(α + β) =
    • _tanα + tanβ_
    • 1 - tanαtanβ
  6. 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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