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

Involving cos^-1(z+1/z-1) and coth^-1(z^1/2)

Involving cos^-1(z+1/z-1) and coth^-1(1/z^1/2)

Involving cos^-1(z+1/z-1) and coth^-1(1/z^1/2)