Page 1: Introduction to Trigonometric Functions

This page introduces fundamental trigonometric concepts and their mathematical representations. The content focuses on sine and cosine functions as primary trigonometric ratios, establishing the groundwork for more complex mathematical applications.

Definition: Trigonometric functions are mathematical functions that relate angles of a right triangle to ratios of the lengths of its sides.

Vocabulary: Sin (sine) and Cos (cosine) are the primary trigonometric functions used to describe relationships in right triangles and circular motion.

Example: The sine function (sin θ) represents the ratio of the opposite side to the hypotenuse in a right triangle, while the cosine function (cos θ) represents the ratio of the adjacent side to the hypotenuse.

Highlight: Understanding these basic trigonometric functions is crucial for advanced mathematical concepts and real-world applications in physics, engineering, and other scientific fields.

The page includes numerical references and mathematical notations that form the basis for understanding 삼각함수 각변환 (trigonometric angle conversions) and creating accurate 삼각함수 표 (trigonometric tables).