Prove that `cotx cot2x -cot2xcot3x-cot3xcotx=1`

Prove that cot x cot 2 x-cot 2 x cot 3 x-cot 3 x cot x=1

Show that cot (x-y)=(cot x cot y+1)/(cot y-cot x)

Prove that (cos3x+cos7x-cos2x)/(sin 7x-sin3x-sin2x)=cot2x

Prove that cottheta-tantheta=2cot2theta .

Choose the correct answer int dx/(sin^2x cos^2x) =.... a) tanx+cotx+c b) tanx-cotx+c c) tanx cotx+c d) tanx-cot2x+c

If none of the angles x, y and (x+y) is a multiple of pi , then cot (x+y)=(cot x cot y-1)/(cot y+cot x)

If cos(A+B)sin(C+D)=cos(A-B)sin(C-D) , prove that cot A cot B cot C= cot D.

Evaluate int cot x dx

Prove that cot4x(sin5x+sin3x)=cotx(sin5x-sin3x)

Prove that cot 4 x(sin 5 x+sin 3 x)=cot x(sin 5 x-sin 3 x)