Involving csc-1(21/2((1-z2)1/2/((1-z2)1/2-1))1/2)
Involving csc-1((2(1-z2)1/2/((1-z2)1/2-1))1/2) and coth-1(z)
Involving csc-1(21/2((1-z2)1/2/((1-z2)1/2-1))1/2) and coth-1(1/z)