cosec A+2cosec2A=sec A cot(A)/(2)

cosec A- 2cot 2A cos A=

cosec A -2 cot 2A cos A=

( cos A - sin A + 1 ) / ( cos A + sin A - 1 ) = cosec A + cot A cosec A + cot A , = using the identity cosec ^ 2 A = 1 + cot^ 2 A .

(cosec A. cosecB+cotA . cotB)^2-(cosec A. cotB + cosecB. cot A)^2 is

(cosec A. cosecB+cotA . cotB)^2-(cosec A. cotB + cosecB. cot A)^2 is

Prove that : (sin A + cos A) (sec A + cosec A) = 2 + sec A cosec A

Prove the following identities : ((cosec A - cot A)^(2) + 1)/(sec A (cosec A - cot A)) = 2 cot A

Prove that : (sec A - tan A)/ (cosec A + cot A) = (cosec A - cot A)/ (sec A + tan A)

Prove the following identity : (1+ cot A+tan A) (sin A-cos A) =(secA)/(cosec^2 A)- (cosec A)/(sec^2A) .

S=cosecx+cosec 2x+cosec 4x+…+cosec 2nx=cot(x/2)−cot2nx