Q. The value of$\ \cos{1{^\circ}}\cos{2{^\circ}}\cos{3{^\circ}}\ldots\cos{100{^\circ}}\$is equal to
A) 1
B) $- 1$
C) 0
D) None of these
Explanation
(c)
$\cos{1{^\circ}\cos{2{^\circ}\cos{3{^\circ}\ldots\cos{90{^\circ}\ldots\cos{100{^\circ}}}}}}$
$= \cos{1{^\circ}\cos{2{^\circ}\cos{3{^\circ}\ldots 0\ldots\cos{100{^\circ}}}}} = 0$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.