For an acute angle ,

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

Problem

For an acute angle θ\theta, cos⁡θ=32\cos \theta = \dfrac{\sqrt{3}}{2}. Calculate sin⁡2θ−cos⁡2θ\sin^{2}\theta - \cos^{2}\theta. (a) 11 (b) 32\dfrac{\sqrt{3}}{2} (c) −12-\dfrac{1}{2} (d) 12\dfrac{1}{2}

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