
Ari F.
asked 12/09/19Prove the Following Identity
1-cos2θ/2=sin^2θ
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1 Expert Answer
Mark M. answered 12/09/19
Tutor
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(954)
Retired Math prof with teaching and tutoring experience in trig.
(1 - cos(2θ)) / 2 = [1 - (1 - 2sin2θ)] / 2 = 2sin2θ / 2 = sin2θ
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Michael H.
12/09/19