1
Q
csc(x) =
A
1/ sin(x)
2
Q
sec(x)=
A
1/cos(x)
3
Q
cot(x)=
A
1/tan(x)
4
Q
What are the three Pythagorean identities?
A
1) sin^2 +cos^2=1
2)1 +cot2= csc^2x
2) 1+tan2= sec^2x
5
Q
sin(-x)=
A
-sinx
6
Q
cos(-x)
A
cosx
7
Q
tan(-x)=
A
-tanx
8
Q
csc(-x)=
A
-cscx
9
Q
sec(-x)=
A
secx
10
Q
cot(-x)=
A
-cotx
Trigonometry
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