Trig Flashcards
1
Q
Sec x
A
1/cos x
2
Q
Cot x
A
1/Tan x
3
Q
Tan x
A
Sin x/cos x
4
Q
Cot x
A
Cos x/sin x
5
Q
Sin^2 x+ cos^2 x
A
1
6
Q
1 + cot^2 x
A
Csc^2x
7
Q
Tan^2 x + 1
A
Sec^2 x
8
Q
Sin(x+y)
A
Sinxcoxy+sinycosx
9
Q
Sin(x-y)
A
Sinxcoxy-sinycosx
10
Q
Cos(x+y)
A
Cosxcosy-sinxsiny
11
Q
Cos(x-y)
A
Cosxcosy+sinxsiny
12
Q
Tan(x+y)
A
Tanx+tany/1-tanxtany
13
Q
Tan(x-y)
A
Tanx-tany/1+tanxtany
14
Q
Sin2x
A
2sinxcosx
15
Q
Cos2x
A
1) cos^2 x - sin^2 x
2) 1- 2sin^2 x
3) 2cos^2 x - 1
16
Q
Tan2x
A
2tanx/1-tan^2 x
