int cosec^(2)xdx" is "

int cosec^(4)xdx

int cosec^(-1)xdx

int xcosec^2xdx

int sec^(2)xdx=

If u=int cosec^(2)xdx , v=int cosec x cot xdx ,assuming the constant of integration to be zero then find u+v

int "cosec"^(6) xdx

int "cosec"^(5) xdx

int sec^(2) x " cosec"^(2) xdx is a function of -

int _(pi//4)^(pi//2) "cosec"^(2)xdx is equal to