AP Pre Calc Trig Identities
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16 Terms
1
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1
Sin²θ+cos²θ
2
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sec²θ
1+tan²θ
3
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csc²θ
1+cot²θ
4
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cscθ
1/sinθ
5
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secθ
1/cosθ
6
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cotθ
1/tanθ
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cotθ
cosθ/sinθ
8
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sin(A+B)
sin A cos B + cos A sin B
9
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cos(A+B)
cos A cos B - sin A sin B
10
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sin 2θ
2sinθcosθ
11
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cos 2θ
cos²θ-sin²θ
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cos 2θ
2cos²θ-1
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cos 2θ
1-2sin²θ
14
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tan2θ
2tanθ/(1-tan²θ)
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sin²θ
(1-cos 2θ)/2
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cos²θ
(1+cos 2θ)/2