To rewrite solely in terms of

MATHEMATICS · Single correct · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

To rewrite sin⁡2θ\sin^{2}\theta solely in terms of cos⁡θ\cos \theta, which of the following expressions should replace sin⁡2θ\sin^{2}\theta? (a) 1−cos⁡θ1-\cos\theta (b) 1−cos⁡2θ1-\cos^{2}\theta (c) sec⁡2θ−1\sec^{2}\theta-1 (d) 1+cos⁡2θ1+\cos^{2}\theta

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