Trigonometric identities
5.0(1)
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Last updated 1:04 AM on 10/25/22
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24 Terms
1
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sin θ
1/ cscθ
2
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csc θ
1/sinθ
3
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cos θ
1/secθ
4
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sec θ
1/cosθ
5
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tan θ
1/cotθ
6
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cot θ
1/tanθ
7
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sin, cos, tan
sin=x, cos=y, tan= y/x
8
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tan θ
sin θ/cos θ
9
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cot θ
cos θ/sin θ
10
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cos squared θ + sin squared θ
cos^2 θ +sin^2 θ= 1
11
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1 + tan squared θ
1+ tan^2 θ= sec ^2 θ
12
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cot squared θ + 1
cot ^2 θ + 1= csc^2 θ
13
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sin(pi/2- θ)
cos θ
14
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tan(pi/2-θ)
cot θ
15
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sec(pi/2-θ)
csc θ
16
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cos(pi/2-θ)
sin θ
17
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cot(pi/2-θ)
tan θ
18
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csc(pi/2- θ)
sec θ
19
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sin(-x)
-sin(x)
20
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csc(-x)
-csc(x)
21
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cos(-x)
cos(x)
22
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sec(-x)
sec(x)
23
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tan(-x)
-tan(x)
24
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cot(-x)
-cot(x)