Given with in Quadrant II

MATHEMATICS · Single correct · A Level · Mathematics · Trigonometry · Trigonometry

Problem

Given sin⁡x=513\sin x = \dfrac{5}{13} with xx in Quadrant II, find cos⁡x\cos x. (a) 1213\dfrac{12}{13} (b) −813-\dfrac{8}{13} (c) −1213-\dfrac{12}{13} (d) −144169-\dfrac{144}{169}

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