Trig Identities Flashcards
0
Q
Cos2x
A
Cos^2x-sin^2x
1
Q
Sin2x
A
Sinxcosx
2
Q
sin(α + β)
A
sin(α)cos(β) + cos(α)sin(β)
3
Q
sin(α – β)
A
Sin(α)cos(β) – cos(α)sin(β)
4
Q
cos(α + β)
A
cos(α)cos(β) – sin(α)sin(β)
5
Q
cos(α – β)
A
cos(α)cos(β) + sin(α)sin(β)
