1
Q
tan(x) =
A
sin(x)/cos(x)
2
Q
cot(x) =
A
cos(x)/sin(x)
3
Q
sin(π/2 - x) =
A
cos(x)
4
Q
tan(π/2 - x) =
A
cot(x)
5
Q
sec(π/2 - x) =
A
csc(x)
6
Q
cos(π/2 - x) =
A
sin(x)
7
Q
cot(π/2 - x) =
A
tan(x)
8
Q
csc(π/2 - x) =
A
sec(x)
9
Q
cos(-x) =
A
cos(x)
10
Q
sec(-x) =
A
sec(x)
11
Q
sin(-x) =
A
-sin(x)
12
Q
tan(-x) =
A
-tan(x)
13
Q
csc(-x) =
A
-csc(x)
14
Q
cot(-x) =
A
-cot(x)
15
Q
What are the 3 main identities?
A
sin^2(x) + cos^2(x) = 1
1 + tan^2(x) = sec^2(x)
1 + cot^2(x) = csc^2(x)
