Trigonometric Identities Flashcards
1
Q
1/csc(x)
A
sin(x)
2
Q
1/sec(x)
A
cos(x)
3
Q
1/cot(x)
A
tan(x)
4
Q
1/sin(x)
A
csc(x)
5
Q
1/cos(x)
A
sec(x)
6
Q
1/tan(x)
A
cot(x)
7
Q
sin(x)/cos(x)
A
tan(x)
8
Q
cos(x)/sin(x)
A
cot(x)
9
Q
sin2(x) + cos2(x)
A
1
10
Q
tan2(x) + 1
A
sec2(x)
11
Q
1 + cot2(x)
A
csc2(x)
12
Q
sin(-x)
A
-sin(x)
13
Q
cos(-x)
A
cos(x)
14
Q
tan(-x)
A
-tan(x)
15
Q
csc(-x)
A
-csc(x)
16
Q
sec(-x)
A
sec(x)
17
Q
cot(-x)
A
-cot(x)
18
Q
cos((π/2) - u)
A
sin(u)
19
Q
sin((π/2) - u)
A
cos(u)
20
Q
tan((π/2) - u)
A
cot(u)
21
Q
cot((π/2) - u)
A
tan(u)
22
Q
sec((π/2) - u)
A
csc(u)
23
Q
csc((π/2) - u)
A
sec(u)
