Involving csc^-1(2^1/2 (1+z²)^1/4/((1+z²)^1/2-z)^1/2)

Involving csc^-1(2^1/2 (1+z²)^1/4/((1+z²)^1/2-z)^1/2) and cot^-1(z)

Involving csc^-1(2^1/2 (1+z²)^1/4/((1+z²)^1/2-z)^1/2) and cot^-1(1/z)