Angle Identities Flashcards
1
Q
d/dx sin x
A
cos x
2
Q
d/dx cos x
A
-sin x
3
Q
d/dx tan x
A
sex^2 X
4
Q
d/dx csc x
A
-csc x cot x
5
Q
d/dx sex x
A
sec x tan x
6
Q
d/dx cot x
A
-csc^2 x
7
Q
sin^2(x) + cos^2(x)
A
1
8
Q
sin(2x)
A
2 sin(x) cos(x)
9
Q
- cos(2x)
A
cos^2(x) - sin^2(x)
10
Q
- cos(2x)
A
2cos^2(x) - 1
11
Q
- cos(2x)
A
1 - 2sin^2(x)
12
Q
tan(2x)
A
[2tan(x)]/[1 - tan^2(x)]
13
Q
sin(x±y)
A
sin(x)cos(y) ± cos(x)sin(y)
14
Q
cos(x±y)
A
cos(x)cos(y) ± sin(x)sin(y)
15
Q
tan(x±y)
A
[tan(x) ± tan(y)]/[1 ± tan(x)tan(y)]
