Q. If sin $\theta$ + cosec $\theta$=2, then $\sin^{2}{\theta + {cosec}^{2}\theta}$ is equal to

A) 1
B) 4
C) 2
D) None of these
Explanation

(c)
Given that, $\sin{\theta + cosec\ \theta = 2}$
On squaring both sides, we get
$\sin^{2}{\theta + {cosec}^{2}\theta + 2 = 4}$
$\Rightarrow \sin^{2}{\theta + {cosec}^{2}\theta = 2}$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.