Given that (correct to four decimal places)

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

Problem

Given that sin⁡42∘=0.6691\sin 42^{\circ}=0.6691 (correct to four decimal places), find cos⁡48∘\cos 48^{\circ} correct to four decimal places. (a) 0.74310.7431 (b) 0.69470.6947 (c) 0.66910.6691 (d) 0.70710.7071

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