formulas for chapter 5 Flashcards
1
Q
cos^(2)x+sin^(2)x=
A
1
2
Q
1-cos^2x=
A
sin^2x
3
Q
1-sin^2x=
A
cos^2x
4
Q
sec^2x - tan^2x =
A
1
5
Q
1 + tan ^2x =
A
sec^2x
6
Q
sec^2x-1=
A
tan ^2x
7
Q
csc^2x - cot^2x =
A
1
8
Q
1 + cot^2x=
A
csc^2x
9
Q
csc^2x - 1=
A
cot^2x
10
Q
cos (-x)=
odd or even
A
cosx
even
11
Q
sec (-x) =
odd or even
A
secx
even
12
Q
sin (-x) =
odd or even
A
-sinx
odd
13
Q
tan (-x) =
odd or even
A
-tanx
odd
14
Q
csc (-x) =
odd or even
A
-cscx
odd
15
Q
cot (-x)
odd or even
A
-cotx
odd
16
Q
cos ( Π/ 2 -x) =
A
sinx
17
Q
tan ( Π/ 2 -x) =
A
cot
18
Q
sin ( Π/ 2 -x) =
A
cos
19
Q
cot ( Π/ 2 -x) =
A
tan
20
Q
sec ( Π/ 2 -x) =
A
cscx
21
Q
csc ( Π/ 2 -x) =
A
secx
22
Q
sin2θ=
A
2sinθcosθ
23
Q
cos2θ =
A
cos^2 θ - sin^2 θ
2cos^2 θ -1
1-2sin^2 θ
24
Q
tan2θ=
A
2tanθ
1 - tan ^2 θ
25
sin θ/2=
± √(1-cosθ ) /
√2
26
cos θ/2=
± √(1+cosθ) /
√2
27
tan θ/2=
± √(1- cosθ) /
± √(1+cosθ)
1-cos θ
sinθ
sinθ
1+cosθ
