Involving sin^-1((-z²)^1/2/(1-z²)^1/2)

Involving sin^-1((-z²)^1/2/(1-z²)^1/2) and tanh^-1(z)

Involving sin^-1((-z²)^1/2/(1-z²)^1/2) and tanh^-1(1/z)