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

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

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