Trig Angle Formulas Flashcards
1
Q
Sin(a+b)
A
Sin(a)cos(a)+sin(b)cos(b)
2
Q
Sin(a-b)
A
Sin(a)cos(a)-sin(b)cos(b)
3
Q
Cos(a+b)
A
Cos(a)cos(b)-sin(a)sin(b)
4
Q
Cos(a-b)
A
Cos(a)cos(b)-sin(a)sin(b)
5
Q
Sin(2a)
A
2sin(a)cos(a)
6
Q
Sin(a/2)
A
1/2(1-cos(a))
7
Q
Cos(a/2)
A
1/2(1+cos(a))
