Involving cosh^-1(1-z/1+z)

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

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

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