If for an acute angle

MATHEMATICS · Subjective · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

If sin⁡θ=12\sin \theta = \dfrac{1}{2} for an acute angle θ\theta, evaluate 4cos⁡2θ−3sin⁡2θ4\cos^{2}\theta - 3\sin^{2}\theta.

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