Involving csc^-1((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 tan^-1(z)

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