This document provides instructions for solving right triangles using trigonometric functions. It explains that solving a right triangle involves finding the measures of the three angles and lengths of the three sides. It notes that a calculator's inverse trigonometric functions allow working backwards from a trig ratio to the corresponding angle measure. Finally, it offers guidance for determining which inverse function to use based on the given information, such as using tangent when the hypotenuse is unknown or cosine when the opposite side is missing.