(8cot x+1)/(3cot x+2)

int(dx)/((cot x)/(2)*(cot x)/(3)*(cot x)/(6))

( cot x)/( cot x- cot 3x)+ ( tan x)/( tan x- tan 3x)=

int sec^(2)x cos ec^(4)x=Atan x+2cot x-(1)/(3)cot^(3)x+CBtan x-2cot x+(1)/(3)cot^(3)x+Cctan x-2cot x-(1)/(3)cot^(3)x+CDtan x+2cot x+(1)/(3)cot^(3)x+C

int[(cot^2 2x-1)/(2cot2x)-cos8xcot4x]dx

int[(cot^2 2x-1)/(2cot2x)-cos8xcot4x]dx

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

Prove that (frac(tan^3 x)(1+tan^2 x))+(frac(cot^3 x)(1+cot^2 x))=secxcosecx-2sinxcosx

Prove the following: cot x cot 2x -cot 2x cot 3x -cot 3x cot x = 1

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

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