Learn to utilize the Unit Circle for evaluating trigonometric functions in this comprehensive 43-minute video tutorial. Explore the fundamentals of Sine, Cosine, Tangent, Secant, Cosecant, and Cotangent functions. Discover techniques for finding angles, working with negative angles, and applying the Pythagorean theorem in trigonometry. Gain practical skills in using a calculator for trigonometric calculations and deepen your understanding of precalculus concepts. This educational content, presented by Professor Leonard, provides a thorough exploration of the Unit Circle's role in trigonometry, equipping students with essential knowledge for advanced mathematical studies.