Trig Identities Flashcards
1
Q
1 - sin^2
A
cos^2
2
Q
1 - cos^2
A
sin^2
3
Q
tan^2 + 1
A
sec^2
4
Q
sec^2 - 1
A
tan^2
5
Q
1 + cot^2
A
csc^2
6
Q
csc^2 - 1
A
cot^2
7
Q
sin2x
A
2sinxcosx
8
Q
cos2x
A
cos^2 - sin^2
9
Q
1 - 2sin^2
A
cos2x
10
Q
(1 + cos2x)/2
A
cos^2
11
Q
(1 - cos2x)/2
A
sin^2
12
Q
integral of 1/(u^2 + a^2)
A
1/a *arctan(u/a) + c
13
Q
int of sec
A
ln{sectan} + c
14
Q
int of csc
A
-ln{csc + cot} + c
15
Q
deriv of secx
A
secxtanx
