Which of the following equals ?

MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

Which of the following equals sin⁡2θ\sin 2\theta? (a) cos⁡2θ−sin⁡2θ\cos^{2}\theta-\sin^{2}\theta (b) sin⁡θcos⁡θ\sin\theta\cos\theta (c) 2sin⁡θcos⁡θ2\sin\theta\cos\theta (d) 2tan⁡θ1−tan⁡2θ\dfrac{2\tan\theta}{1-\tan^{2}\theta}

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