TRIGO IDENTITIES Flashcards
1
Q
Cot theta
A
1/ tan theta
2
Q
Csc theta
A
1/ sin theta
3
Q
Sec theta
A
1/ cos theta
4
Q
Tan theta
A
Sin theta/ cos theta
5
Q
Cot theta
A
Cos theta / sin theta
6
Q
Sin ^2 theta + cos ^2 theta
A
1
7
Q
Tan ^2 theta + 1
A
Sec ^2 theta
8
Q
1 + cot ^2 theta
A
Csc^2 theta
9
Q
Sin^2 x/2
A
(1/2) (1-cos x)
10
Q
Cos^2 x
A
(1/2) (1+ cos 2x)
11
Q
Sin ^2 x
A
(1/2)(1-cos 2x)
12
Q
Cos ^2 x/2
A
(1/2)(1+ cos x)
