Q. The value of $\frac{\cot{54{^\circ}}}{\tan{36{^\circ}}} + \frac{\tan{20{^\circ}}}{\cot{70{^\circ}}}$ is
A) 0
B) 2
C) 3
D) 1
Explanation
(b)
$\frac{\cot{54{^\circ}}}{\tan{36{^\circ}}} + \frac{\tan{20{^\circ}}}{\cot{70{^\circ}}}$
$= \frac{\tan{36{^\circ}}}{\tan{36{^\circ}}} + \frac{\tan{20{^\circ}}}{\tan{20{^\circ}}}$
$= 1 + 1 = 2$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.