Fundamentail Identies Flashcards
0
Q
sec x =
A
1
cos x
1
Q
cosec x =
A
1
sin x
2
Q
tan x =
A
sin x
cos x
3
Q
cot x =
A
cos x / sin x
1 / tan x
4
Q
sin2 x + cos2 x =
A
1
5
Q
sin 2x =
A
2 sin x cos x
6
Q
cos 2x =
A
1 - 2 sin2 x
7
Q
tan 2x =
A
2 tan x
1 - tan2 x
8
Q
sin2 x =
A
1/2 (1 - cos(2x))
9
Q
cos2 x =
A
1/2 (1 + cos(2x))
10
Q
tan2 x =
A
1 - cos(2x)
1 + cos(2x)
