Given and is obtuse

MATHEMATICS · Single correct · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

Given sin⁡θ=35\sin\theta=\dfrac{3}{5} and θ\theta is obtuse, find cos⁡θ\cos\theta. (a) −35-\dfrac{3}{5} (b) −45-\dfrac{4}{5} (c) 45\dfrac{4}{5} (d) −25-\sqrt{\dfrac{2}{5}}

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