If and lies in the second quadrant

MATHEMATICS · Multi-part · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

If sin⁡θ=35\sin \theta=\dfrac{3}{5} and θ\theta lies in the second quadrant, find the following. (i) cos⁡θ\cos \theta (ii) sin⁡2θ\sin 2\theta (iii) cos⁡2θ\cos 2\theta (iv) tan⁡2θ\tan 2\theta

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