The number of solutions of the equation cos 2θ cos ( θ/2) + cos (… | JEE Main 2025 Mathematics PYQ

MCQMediumJEE Main 2025 · 7 April, Shift 2Trigonometric Equations

The number of solutions of the equation $\cos 2\theta \cos \left( \frac{\theta}{2} \right) + \cos \left( \frac{5\theta}{2} \right) = 2 \cos^3 \left( \frac{5\theta}{2} \right)$ in the interval $\left[ -\frac{\pi}{2}, \frac{\pi}{2} \right]$ is:

A
$7$
B
$5$
C
$6$
D
$9$

Answer & step-by-step solution

Practice more Trigonometric Equations questions

Get unlimited AI-adaptive practice, mastery tracking, and an AI tutor that explains every step - free to start.

Start free trial More on Trigonometric Equations

Answer & step-by-step solution

Practice more Trigonometric Equations questions

Related questions