Trigonometric Expression Value Calculation (Jee…

Basic Ratios, Identities & Formulas

Medium

Trigonometric Expression Value Calculation

Let $\frac{\pi }{2}$ < θ < π and cotθ = $- \frac{1}{{2\sqrt 2 }}$ . Then the value of $\sin \left( {\frac{{15\theta }}{2}} \right)$ (cos8θ+sin8θ) + $\cos \left( {\frac{{15\theta }}{2}} \right)$ (cos8θ – sin8θ) is equal to :

SELECT ONE OPTION

Ask about this question