Find the exact value of .

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

Problem

Find the exact value of cos⁡275∘\cos^2 75^{\circ}. (a) 2+34\dfrac{2+\sqrt{3}}{4} (b) 2−34\dfrac{2-\sqrt{3}}{4} (c) 6−24\dfrac{\sqrt6-\sqrt2}{4} (d) 4+6−28\dfrac{4+\sqrt6-\sqrt2}{8}

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