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Question

sin 2θ
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cos 2θ
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Trigonometry

Double Angle Identities

QuestionAnswer
sin 2θ 2sinθcosθ
cos 2θ cos^2 θ - sin^2 θ
cos 2θ 2 cos^2 θ - 1
cos 2θ 1 - 2sin^2 θ
tan 2θ (2 tan θ)/(1 -tan^2 θ)
Created by: ed_delao
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