Involving csc-1(21/2(z2-1)1/4/((z2-1)1/2-z)1/2)
Involving csc-1(21/2(z2-1)1/4/((z2-1)1/2-z)1/2) and coth-1(z)
Involving csc-1(21/2(z2-1)1/4/((z2-1)1/2-z)1/2) and coth-1(1/z)
