Samllest positive angle satisfying the e...

Samllest positive angle satisfying the equation `cos^(2)x+cos^(2) 2x+cos^(2)3x=1`, is

A

`7.5^(@)`

B

`15^(@)`

C

`18^(@)`

D

none

Verified by Experts

Similar Questions

Explore conceptually related problems

Solution of the equation cos^(2)x+cos^(2)2x+cos^(2)3x=1 is

Smallest positive x satisfying the equation cos^(3) 3x + cos^(3) 5x = 8 cos^(3) 4x * cos^(3) x is :

If x is smallest positive angle in degrees satisfying the equation 8sin x cos^(5)x8sin^(5)x cos x=1, then find the value of 2x .

Smallest positive angle satisfying the equation 4log_(16)(cos2x)+2log_(4)(sin x)+log_(2)(cos x)+3=0 is

Solve the equation sin^(2)x + cos^(2)3x=1

Smallest positive x satisfying the equation sin3x+3cos x=2sin2x(sin x+cos x), is-

A and B are positive acute angles satisfying the equation 3cos^(2)A+2cos^(2)B=4(3sin A)/(sin B)=(2cos B)/(cos A) then A+2B is

The value of x satisfying the equation cos^(-1)3x+sin^(-1)2x=pi is

The smallest positive x satisfying the equation log_(cos x)sin x+log_(sin x)cos x=2 is (pi)/(2)(b)(pi)/(3)(c)(pi)/(4)(d)(pi)/(6)