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Trigonometry Flashcards

(61 cards)

1
Q

tan θ

A

sin θ
_____
cos θ

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2
Q

sin (90° + θ)

A

cos θ

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3
Q

cos (90° + θ)

A

-sin θ

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4
Q

tan (90° + θ)

A

-cot θ

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5
Q

1 + cot² θ

A

cosec² θ

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6
Q

cosec² θ

A

1 + cot² θ

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7
Q

tan (A + B)

A

tan A + tan B
______________
1 - tanAtanB

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8
Q

tan A + tan B
______________
1 - tanAtanB

A

tan (A + B)

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9
Q

sin² + cos²

A

1

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10
Q

1

A

sin² + cos ²

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11
Q

sin (-θ)

A

-sin θ

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12
Q

cos (-θ )

A

cos θ

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13
Q

tan (-θ)

A

-tan θ

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14
Q

cos 2A in cos and sin

A

cos² - sin²

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15
Q

cos 2A in cos

A

2 cos²A - 1

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16
Q

cos 2A in sin

A

1 - 2sin²A

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17
Q

cos²A - sin²A

A

cos 2A

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18
Q

2 cos²A - 1

A

cos 2A

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19
Q

1 - 2sin²A

A

cos 2A

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20
Q

sin (A + B)

A

sinAcosB + cosAsinB

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21
Q

sin (A - B)

A

sinAcosB - cosAsinB

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22
Q

sin (90° - θ)

A

cos θ

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23
Q

cos (90° - θ)

A

sin θ

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24
Q

tan (90° - θ)

A

cot θ

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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