2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/205084We analytically evaluate a dilogarithmic integral that is prototypical of volumes of ideal tetrahedra in hyperbolic geometry. We additionally obtain new representations of the Clausen function Cl_2 and the Catalan constant G=Cl_2(π/2), as well as new relations between sine and Clausen function values.24 pages, no figuresMathematical Physics33B30, 33B15, 11M35text