Home
Class 11
MATHS
" Prove that "cos3x=4cos^(3)x-3cos x...

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

Promotional Banner

Similar Questions

Explore conceptually related problems

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

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

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

Prove that 2cosx. Cos 3x- 2cos 5x. Cos 7x- cos 4x + cos12x=0 .

Prove that 2cosx. Cos 3x- 2cos 5x. Cos 7x- cos 4x + cos12x=0 .

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

Prove that (cos 4 x+cos 3 x+cos 2 x)/(sin 4 x+sin 3 x+sin 2 x)=cot 3 x .

Prove that (cos(4x)+cos(3x)+cos(2x))/(sin(4x)+sin(3x)+sin(2x))=cot(3x)

Prove that cos 5x =17 cos^(5) x -2 theta cos^(3) x+ 5 cos x

Prove that cos^(-1)(3x-4x^3)=3cos^(-1)x,x in[1/2,1]