Sum and Difference Formulas For Cosine and Tangent Flashcards
1
Q
Tan( α - β )
A
(Tanα -Tanβ )/(1+TanαTanβ)
2
Q
Cos( α + β )
A
CosαCosβ - SinαSinβ
3
Q
Tan( α + β )
A
Tanα + Tanβ/ 1 - TanαTanβ
4
Q
Sin( α - β )
A
SinαCosβ - SinβCosα
5
Q
Cos( α - β )
A
CosαCosβ + SinαSinβ
6
Q
Sin(α + β)
A
SinαCosβ + CosαSinβ
