Trigonometry Flashcards
(61 cards)
1
Q
tan θ
A
sin θ
_____
cos θ
2
Q
sin (90° + θ)
A
cos θ
3
Q
cos (90° + θ)
A
-sin θ
4
Q
tan (90° + θ)
A
-cot θ
5
Q
1 + cot² θ
A
cosec² θ
6
Q
cosec² θ
A
1 + cot² θ
7
Q
tan (A + B)
A
tan A + tan B
______________
1 - tanAtanB
8
Q
tan A + tan B
______________
1 - tanAtanB
A
tan (A + B)
9
Q
sin² + cos²
A
1
10
Q
1
A
sin² + cos ²
11
Q
sin (-θ)
A
-sin θ
12
Q
cos (-θ )
A
cos θ
13
Q
tan (-θ)
A
-tan θ
14
Q
cos 2A in cos and sin
A
cos² - sin²
15
Q
cos 2A in cos
A
2 cos²A - 1
16
Q
cos 2A in sin
A
1 - 2sin²A
17
Q
cos²A - sin²A
A
cos 2A
18
Q
2 cos²A - 1
A
cos 2A
19
Q
1 - 2sin²A
A
cos 2A
20
Q
sin (A + B)
A
sinAcosB + cosAsinB
21
Q
sin (A - B)
A
sinAcosB - cosAsinB
22
Q
sin (90° - θ)
A
cos θ
23
Q
cos (90° - θ)
A
sin θ
24
Q
tan (90° - θ)
A
cot θ
25
sin (270° - θ)
-cos θ
26
cos (270° - θ)
-sin θ
27
tan (270° - θ)
cot θ
28
2sinAcosA
sin 2A
29
sin 2A
2sinAcosA
30
tan² θ + 1
sec² θ
31
sec² θ
tan² θ + 1
32
sin (180° - θ)
sin θ
33
cos (180° - θ)
-cos θ
34
tan (180° - θ)
-tan θ
35
tan 2A
2 tanA
__________
1 - tan² A
36
2 tanA
__________
1 - tan² A
tan 2A
37
cot θ
cos θ
_____
sin θ
38
sin (180° + θ)
-sin θ
39
cos (180° + θ)
-cos θ
40
tan (180° + θ)
tan θ
41
cos (A + B)
cosAcosB - sinAsinB
42
cos (A - B)
cosAcosB + sinAsinB
43
sin θ in 0°
√0/2
44
sin θ in 30°
√1/2
45
sin θ in 45°
√2/2
46
sin θ in 60°
√3/2
47
sin θ in 90°
√4/2
48
cos θ in 0°
√4/2
49
cos θ in 30°
√3/2
50
cos θ in 45°
√2/2
51
cos θ in 60°
√1/2
52
cos θ in 90°
√0/2
53
tan θ in 0°
0
54
tan θ in 30°
1/√3
55
tan θ in 45°
1
56
tan θ in 60°
√3
57
tan θ in 90°
undefined
58
Rsin(θ-α)
asin θ - bcos θ
59
Rsin(θ+α)
asin θ + bcos θ
60
Rcos(θ-α)
acos θ + bsin θ
61
Rcos(θ+α)
acos θ - bsin θ
