Involving tan^-1((1+z²)^1/2+a/z)

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

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

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

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