Cosine Function Derivative Demo

This example demonstrates the derivative of the cosine function in radians, including its graph and geometric interpretation. Key math concepts involved are the definition of derivatives, geometric meaning, and properties of the cosine function. Construction highlights include using GeoGebra commands like Tangent, f (function), a (parameter), P (point), g (auxiliary object), P' (point), f' (derivative function), text1 (text), b (parameter), text2 (text), text3 (text), c (parameter), and text4 (text). Suitable for high school calculus education to visually understand the geometric meaning of derivatives and function graph transformations.