For 0 lt x lt pi the values of x which ...

For 0 `lt x lt pi` the values of x which satisfy the relation
`9^(1 + | cos x | + | cos^(2) x | + cos^(3) x | + …."upto" infty )= 3^(4)` are given by

A

`pm pi//4, pm 2 pi //3`

B

`pm pi //6, pm 2 pi //3`

C

`pm pi // 3, pm 2 pi //3`

D

`pm pi//2, pm 2 pi //3`

Verified by Experts

The correct Answer is:

C

Similar Questions

Explore conceptually related problems

The value of x which satisfies 8^(1+|cos x|+|cos x|^(2))+.... =64 in [-pi, pi] is

Find all values of x in (-pi,pi) satisfying the equation 8^(1+cosx+cos^9(2)x+...)=4^(3).

The values of x, between 0 and 2 pi . satisfying the equation cos 3 x + cos 2 x = sin ""(3 x)/( 2) + sin (x)/(2) are

If 0 lt x lt pi and cos x + sin x=1/(2) , then tanx =

For 0 lt x lt (pi)/(2) , prove that cos (sin x) gt sin (cos x) .

If 0 lt x lt pi , and cos x+ sin x =1//2 , then tan x=