Involving cosh^-1((((z²-1)^1/2-z)/(2(z²-1)^1/2))^1/2)

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

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