Find the exact value of .

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

Problem

Find the exact value of cos⁡15∘\cos 15^\circ . (a) 6+28\dfrac{\sqrt6+\sqrt2}{8} (b) 6−24\dfrac{\sqrt6-\sqrt2}{4} (c) 6+24\dfrac{\sqrt6+\sqrt2}{4} (d) 64\dfrac{\sqrt6}{4}

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