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

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

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

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