defining trigonometric functions and ratio of sides

trigonometric identities

values of trigonometric function at different values of theta(angles)

trigonometric formula and CAST rule.

Basic trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. It’s fundamental for understanding various phenomena in mathematics, science, engineering, and more.

Understanding basic trigonometry lays the foundation for more advanced topics such as trigonometric equations, identities, and functions. It’s a powerful tool for solving a wide range of mathematical and real-world problems involving angles and triangles.