trigo identities Flashcards
(14 cards)
1
Q
Double angle = sin2x
A
2sinxcosx
2
Q
1/secx
A
cosx
3
Q
- ______ - _______ = 1
A
cot^2x - csc^2x
4
Q
cot =
A
cosx / sinx
5
Q
1/cosx
A
secx
6
Q
1/cscx
A
sinx
7
Q
1/tanx
A
cotx
8
Q
Double angle = cos2x
A
cos^2x - sin^2x
2cos^2x - 1
1-2sin^2x
9
Q
1/sinx
A
cscx
10
Q
Double angle = tan2x
A
2tanx / 1-tan^2x
11
Q
tan =
A
sinx / cosx
12
Q
- ______ + ________ = 1
A
sin^2x + cos^2x
13
Q
1/cotx
A
tanx
14
Q
- ______ - _______ = 1
A
tan^2x - sec^2x
