Unit Circle Sine Function Demonstration

This example dynamically illustrates the relationship between the position of a point on the unit circle and its corresponding sine value, visually demonstrating the definition and graph of the sine function. Core mathematical concepts include the unit circle, trigonometric definitions, sine function graph, and coordinate geometry. It is constructed using GeoGebra's Circle, Point, and CircleArc commands to create the unit circle, center, point on the circle, and corresponding sine value representation. Suitable for high school mathematics students to understand the geometric meaning of the sine function and for introductory calculus teaching to assist in understanding the continuity and periodicity of trigonometric functions.