This document provides instructions for calculating trigonometric ratios (sine, cosine, tangent) for the acute angles A and B of two right triangles. It first uses the Pythagorean theorem to find the length of one leg of each triangle given the hypotenuse and opposite leg. It then calculates the sine, cosine, and tangent ratios for each angle by plugging the leg lengths into the trigonometric ratio definitions. The calculations are verified using GeoGebra.