Tig Identities Flashcards
1
Q
sin^2x + cos^2x
A
1
2
Q
1+tan^2x
A
sec^2x
3
Q
1+cot^2x
A
csc^2x
4
Q
sin2x
A
2sinxcosx
5
Q
cos2x
A
cos^2x-sin^2x
6
Q
cos2x
A
1-2sin^2x
7
Q
cos2x
A
2cos^2x-1
8
Q
tan2x
A
2tanx/(1-tan^2x)
9
Q
sin^2x
A
(1-cos2x)/2
10
Q
cos^2x
A
(1+cos2x)/2
11
Q
tan^2x
A
(1-cos2x)/(1+cos2x)
12
Q
sin(u+-v)
A
sinucosv+-cosusinv
13
Q
cos(u+-v)
A
cosucosv-+sinusinv
14
Q
tan(u+-v)
A
(tanu+-tanv)/(1-+tanutanv)
15
Q
sinusinv
A
0.5[cos(u-v)-cos(u+v)]
