Demonstrating Sine Function and Similar Triangles

This example dynamically illustrates the relationship between the sine function and similar triangles. It involves core mathematical concepts such as trigonometric functions, similar triangles, geometric mean, median value, and parametric curves. The construction uses GeoGebra commands like Point, Line, Vector, and objects including a, text1, text3, f, A, B, h, i, k, l, D, E, u, v, text2, g. It is suitable for high school mathematics education to understand the connection between trigonometric function graphs and geometric shapes.