What is the value of for an acute angle ?

MATHEMATICS · Single correct · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

What is the value of cos⁡(90∘−θ)\cos(90^{\circ}-\theta) for an acute angle θ\theta? (a) cos⁡θ\cos \theta (b) tan⁡θ\tan \theta (c) sin⁡θ\sin \theta (d) −sin⁡θ-\sin \theta

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