AP Pre-Calculus
The Unit Circle is a circle with a radius of one, centered at the origin of the coordinate plane. It serves as a fundamental tool in trigonometry, helping to define the sine, cosine, and tangent functions based on angles measured from the positive x-axis. The coordinates of points on the Unit Circle directly correspond to the values of these trigonometric functions, making it essential for understanding their properties, including their inverses and other related functions.
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