Home
Class 11
MATHS
Prove that cos 6x =32 cos ^(6) x -48cos ...

Prove that `cos 6x =32 cos ^(6) x -48cos ^(4) x + 18 cos ^(2) x -1`

Promotional Banner

Similar Questions

Explore conceptually related problems

Prove that cos 3x=4 cos ^3x-3cos x

cos 4x =1- 8 sin ^(2) x cos ^(2) x

Prove that: cos3x=4cos^(3)x-3cosx

Prove that cos ^(2) x + cos ^(2) (x + (pi)/(3) + cos ^(2) (x - (pi)/(3)) = 3/2.

cos ^(2) 2x -cos ^(2) 6x = sin 4x sin 8x

Prove that cos ^(2) x+ cos ^(2) (x+ ( pi )/( 3)) +cos ^(2) (x- (pi)/(3)) =(3)/(2)

If sin A + sin^(2)A + sin^(3)A =1 , then , prove that cos^(6) A - 4 cos^(4) A + 8 cos^(2) A =4 .

cos4x=1-8sin^(2)x cos^(2) x

Prove that (cos x +cos y)^(2)+(sin x-sin y)^(2)=4 cos^(2) ((x+y)/(2))