Home
Class 12
MATHS
If 0lt=x<2pi, then the number of real va...

If `0lt=x<2pi`, then the number of real values of `x`, which satisfy the equation `cosx+cos2x+cos3x+cos4x=0,` is :

A

5

B

7

C

9

D

3

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC EQUATION

    MOTION|Exercise EXERCISE 3|28 Videos

  • TRIGNOMETRIC RATIOS & IDENTITIES

    MOTION|Exercise Exercise -4(Level -II)|9 Videos

  • VECTOR

    MOTION|Exercise EXERCISE - 4 ( LEVEL-II)|41 Videos

Similar Questions

Explore conceptually related problems

If 0 lt x lt pi/2 then

If 0 lt x lt pi /2 then

If 0 lt x lt pi/2 then

If 0 lt x lt (pi)/(2) , then ("sin x + cosec x") is

If 0 lt x lt pi and cosx+sinx = (1)/(2) , then tanx is :

If 0 lt x lty lt pi ,then which one of the following is correct?

If 0 lt x lt 45^(@) and 45^(@) lt y lt 90^(@) , then which one of the following is correct ?