If and , find the exact value…

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

Problem

If cos⁡θ=−34\cos\theta=-\dfrac{3}{4} and π2<θ<π\dfrac{\pi}{2}<\theta<\pi, find the exact value of: (1) sin⁡θ\sin\theta (2) tan⁡θ\tan\theta (3) cos⁡(π−θ)\cos(\pi-\theta)

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