Math, asked by shrutisingh7212, 8 months ago

cos^2 2θ-sin^2θ=cosθ.cos3θ Kindly prove this

Answers

Answered by orangejuicetm121

0

Answer:

Cosine 2 theta is 1 minus 2 sine squared theta, cosine 2 theta equals 2 cosine squared minus 1.square of that and cos 0 multiplied by cos theta 30

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