prove that `cottheta.cot2theta + cot2theta.cot3theta + 2 = cot theta(cot theta-cot3theta)`

Prove that: cotthetacot2theta+cot2thetacot3theta+2=cottheta(cottheta-cot3theta)

Prove that cot theta-tan theta=2cot 2 theta .

Solve: cot5theta=cot2theta

prove that (cosec theta + cot theta)/(cosec theta- cot theta) = (cosec theta +cot theta)^2

Solve tan 5 theta= cot 2 theta .

Prove that cot(theta/2)-tan(theta/2)=2cot theta

Prove that cot 2 theta + tan theta = cosec 2 theta

Solve tan5theta=cot2theta

Prove that sin(2theta)/(1-cos2theta)=cot theta

If pi lt theta lt 2pi then sqrt ((1+cos theta)/(1-cos theta))= a. cosec theta+cot theta , b. cosec theta - cot theta , c. cot theta-cosec theta , d. -cosectheta - cot theta