Involving cosh^{-1}(2 z/z^{2}+1)

Involving cosh^{-1}(2 z/z^{2}+1) and cot^{-1}(z)

Involving cosh^{-1}(2 z/z^{2}+1) and cot^{-1}(1/z)

Involving cosh^{-1}(2 z/z^{2}+1) and cot^{-1}(z^{r})