Explore the fundamentals of right triangle trigonometry in this comprehensive lecture. Learn about sine, cosine, tangent, and their reciprocal functions within the context of right triangles. Discover how to apply these concepts effectively and understand the co-function relationships and their resulting identities. Delve into topics such as the unit circle approach, Pythagorean Theorem, finding trig functions, complementary angles, and simplification techniques. Gain a solid foundation in trigonometry through clear explanations and practical examples, preparing you for more advanced mathematical concepts.