(a) Using exact values of standard trigonometric ratios, find the value of . (b)…

MATHEMATICS · Subjective · CBSE · Mathematics · Trigonometric Functions · Trigonometric Functions

Problem

(a) Using exact values of standard trigonometric ratios, find the value of

\sin75^{\circ}

. (b) Hence, calculate

\cos15^{\circ}

. (c) Determine the exact value of

\sin75^{\circ}+\cos15^{\circ}