`int_(pi//6)^(pi//2) (" cosec x cot x")/(1+" cosec "^(2) x)dx`

int_(pi//6)^(pi//4)cosec 2x dx=

int_(pi//6)^(pi//4)cosec 2x dx=

Evaluate the following integrals : int_(pi/6)^(pi/2)(cosecx.cotx)/(1+cosec^(2)x)dx

int_(pi/3)^(pi/2) cosec x dx=?

int_(pi//6)^(pi//2)(cosecxcotx)/(1+cosec^(2)x)dx

int_(pi/4)^(pi/2) cosec^(2)x dx =

int_(-pi//4)^(pi//4) "cosec"^(2) x dx

int_(-pi//4)^(pi//4) "cosec"^(2) x dx

Evaluate the following integrals by changing the limits of integration after suitable subsitutions: underset(pi//6)overset(pi//2)int(cosecx cot x)/(1+cosec^2x)dx