Let and . (a) Evaluate exactly. (b) Evaluate…

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

Problem

Let

\alpha=\dfrac{\pi}{12}

and

\beta=\dfrac{\pi}{3}

. (a) Evaluate

\sin(\beta-\alpha)

exactly. (b) Evaluate

\cos(\beta+\alpha)

exactly.

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