If 0 le x le 2pi, then the number of rea...

If `0 le x le 2pi`, then the number of real values of x, which satisfy the equation `cos x + cos 2x + cos 3x + cos 4x=0`, is

A

5

B

7

C

9

D

3

Verified by Experts

The correct Answer is:

B

Similar Questions

Explore conceptually related problems

If 0<=x<2 pi, then the number of real values of x, which satisfy the equation cos x+cos2x+cos3x+cos4x=0

0<=x<2 pi0<=x<2 pi ,then the number of real values of x, which satisfy the equation quad cos x+cos2x+cos3x+cos4x=0 is :(1)3(2)5(3)7(4)9

For 0 le x le (pi)/(2) , the number of values of x satisfying the equation tan x+ sec x = cos x is

The number of values of x in [0,2pi] satisfying the equation 3cos2x-10cosx+7=0 is

The number of values of x in [0,5 pi] satisfying the equation 3cos^(2)x-10cos x+7=0

Number of values of x satisfying the equation cos(4pi/3-cos^-1x)=x is