Finding Acute Angles in Right Triangles Using Inverse Tangent Function

In this video, the teacher explains how to find the measure of an acute angle in a right triangle when only the side lengths are known. They introduce the concept of trigonometric ratios (sine, cosine, and tangent) and explain how to use the inverse tangent function to find the angle. Through a step-by-step example, they demonstrate how to apply the inverse tangent function to find the measure of an angle.