Trig Functions/Identities
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Last updated 12:18 PM on 4/30/26
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22 Terms
1
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X = a tan theta
2
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X = a sin theta
3
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X = a sec theta
4
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Sin a cos b + cos a sin b
Sin (a+b)
5
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Sin a cos b - cos a sin b
Sin(a-b)
6
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Cos a cos b - sin a sin b
Cos (a+b)
7
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Cos a cos b + sin a sin b
Cos(a-b)
8
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(Tan a + tan b) / (1 - tan a tan b)
Tan (a+b)
9
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(Tab a - tan b) / (1 + tan a tan b)
Tan (a-b)
10
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Sin (x/2)
11
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Cos (x/2)
12
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Tan (x/2)
13
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Tan(x/2)
14
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Tan (x/2)
15
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Sin (2x)
16
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Cos(2x)
17
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Cos(2x)
18
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Cos(2x)
19
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Tan(2x)
20
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Sin²(x)
21
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Cos²(x)
22
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Tan²(x)