Double Angle Identities
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Last updated 7:08 PM on 10/16/26
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5 Terms
1
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Cos2θ
Cos²θ-Sin²θ
2
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Cos2θ
2Cos²θ-1
3
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Cos2θ
1-sin²θ
4
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Sin2θ
2SinθCosθ
5
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Tan2θ
(2Tanθ)/(1-Tan²θ)