Solve the equation

Question:

If $0 \leq x<2 \pi$, then the number of real values of $x$, which satisfy the equation $\cos x+\cos 2 x+\cos 3 x+\cos 4 x=0$, is :-

  1. 9

  2. 3

  3. 5

  4. 7

Correct Option: , 4

Solution:

Leave a comment

eSaral Gurukul

NEET

JEE Main

JEE Advanced

Our Telegram Channel

All Study Material