Compute the hyperbolic length of the arc of the circle $ x^2 + y^2 = 25$ that lies between (3, 4) and (4, 3).
From my notes I know the formula is $$ \ln \frac{{\csc \beta - \cot \beta }}{{\csc \alpha - \cot \alpha }} $$
however I don't know how to find $\beta$ and $\alpha$