Trig identities Flashcards
1
Q
Sin^2x + Cos^2X
A
= 1
2
Q
1 + Cot^2x
A
= Cosec^2x
3
Q
Tan^2x + 1
A
= Sec^2x
4
Q
Sin2A
A
=2SinACosA
5
Q
Cos2A
A
=Cos^2A - Sin^2A
6
Q
Cos2A
A
=2Cos^2A -1
7
Q
Cos2A
A
= 1 - 2Sin^2A
8
Q
Tan2A
A
1 - tan^2A
