Given and lies in the second quadrant

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

Problem

Given cos⁡θ=−725\cos\theta = -\dfrac{7}{25} and θ\theta lies in the second quadrant, find sin⁡θ\sin\theta. (a) 576625\dfrac{576}{625} (b) 2425\dfrac{24}{25} (c) −2425-\dfrac{24}{25} (d) 725\dfrac{7}{25}

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