Trigonometry identities Flashcards
1
Q
Cos^2x+Sin^2x =
A
1
2
Q
Cos^2x=
A
1-Sin^2x
3
Q
Sin^2x=
A
1-Cos^2x
4
Q
Tanx=
A
Sinx/cosx
5
Q
1/sinx=
A
cosec x
6
Q
1/cosx=
A
sec x
7
Q
1/tanx=
A
cot x
8
Q
sec^2x=
A
1 + tan^2x
9
Q
Cos2x=
A
Cos^2x-sin^2, 2cos^2x-1, 1-2sin^2x
10
Q
Sin2x=
A
2cosxsinx
