Trig Identities Flashcards
1
Q
cosx • secx
A
1
2
Q
sinx • cscx
A
1
3
Q
tanx • cotx
A
1
4
Q
tanx
A
sinx/cosx
5
Q
cotx
A
cosx/sinx
6
Q
cos^2x + sin^2x
A
1
7
Q
1 + tan^2x
A
sec^2x
8
Q
cot^2x + 1
A
csc^2x
9
Q
cos(-x)
A
cosx
10
Q
sin(-x)
A
-sinx
11
Q
tan(-x)
A
-tanx
12
Q
sec(-x)
A
secx
13
Q
csc(-x)
A
-cscx
14
Q
cot(-x)
A
-cotx
15
Q
cos(90-x)
A
sinx
