Properties Of Trig Functions Flashcards
1
Q
Cot x
A
1/tan x
2
Q
Tan x cot x
A
1
3
Q
Sec x
A
1/cos x
4
Q
Cos x sec x
A
1
5
Q
Csc x
A
1/sin x
6
Q
Sin x csc x
A
1
7
Q
Tan x
A
Sin x/cos x
Sec x/csc x
8
Q
Cot x
A
Cos x/sin x
Csc x/sec x
9
Q
Cos^2 x + sin^2 x
A
1
10
Q
1+ tan^2 x
A
Sec^2 x
11
Q
Cot^2 x + 1
A
Csc^2 x
12
Q
Sin (-x)
A
-sinx (odd)
13
Q
Cos(-x)
A
Cos x (even)
14
Q
Tan(-x)
A
-tan x
Odd
15
Q
Cot(-x)
A
-cot x
odd
16
Q
Sec(-x)
A
Sec x
even
17
Q
Csc(-x)
A
-csc x
odd
18
Q
Cos(90-θ)
A
Sin θ
19
Q
Cot(90-θ)
A
Tan θ
20
Q
Csc (90-θ)
A
Sec θ
21
Q
Cos (π/2 -x)
A
Sin x
22
Q
Cot(π/2 -x)
A
Tan x
23
Q
Csc(π/2 -x)
A
Sec x
24
Q
Cos (a-b)
A
CosAcosB+sinAsinB
25
Q
cos(A+B)
A
cosAcosB-sinAsinB
26
Q
sin(A-B)
A
sinAcosB-cosAsinB
27
Q
sin(A+B)
A
sinAcosB+cosAsinB
28
Q
tan(A-B)
A
(tanA-tanB)/(1+tanAtanB)
29
Q
tan(A+B)
A
(tanA+tanB)/(1-tanAtanB)
30
Q
sin2x
A
2sinxcosx
31
Q
Cos2x
A
cos^2 x-sin^2 x
1-sin^2 x
2cos^2 x-1
32
Q
tan2x
A
(2 tan x)/(1-tan^2 x)
