Find the sum of series `cosec theta+cosec 2 theta+cosec 4 theta+.......` to n terms .

Solve cot theta + tan theta=2 cosec theta .

Solve cosec^(2)theta-cot^(2) theta=cos theta .

(b) cosec theta=1+cot theta

(b) cosec theta=1+cot theta

Find the sum of the series cosectheta*cosec2theta+cosec2theta*cosec 3theta+cosec3theta*cosec 4theta+… to n tems

Find the minimum value of sec^2 theta + cosec^2 theta - 4.

Prove that : cosec theta + cosec 2 theta + cosec 2^2 theta +...........+cosec2^(n-1) theta= cot(theta/2)-cot 2^(n-1)theta

Find the general value of theta 2 cot ^(2) theta = cosec ^(2) theta

Prove that, sin^2 theta+ cosec^2 theta>=2

Prove that secthetacottheta="cosec"theta