Unit Circle and Cosine Graph by Andy Greasley

This example demonstrates how to dynamically visualize the cosine function graph using a unit circle. Core math concepts include unit circle, trigonometric functions, cosine theorem, and coordinate system. Construction highlights involve using GeoGebra commands/objects like Intersect (intersection), Point (point), Angle (angle), and Segment (segment) to build the unit circle, angle θ, cosine values, and the graph. Suitable for high school mathematics education to understand the generation process of trigonometric function graphs and their relationship with the unit circle.