If and is acute

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

Problem

If sec⁡θ=1312\sec\theta = \dfrac{13}{12} and θ\theta is acute, determine sin⁡θ\sin\theta. (a) 512\dfrac{5}{12} (b) 513\dfrac{5}{13} (c) 1213\dfrac{12}{13} (d) 25169\dfrac{25}{169}

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