![]() As angle θ increases to π 2 radians or 90°, the value BeginningĪt 0π, follow the circle counter-clockwise. This unit circle below shows the measurements of angles in radians and degrees. The value of sin θ equals the y-coordinate of the point p and the value ofĬos θ equals the x- coordinate of the point p as shown in the diagram below. (phi) ray extending from the origin through a point p on the unit circle and the x -axis seeĭiagram below. The unit circle is a circle with a radius that equals 1. The Unit Circle and the Values of Sine and Cosine Functions Horizontal shifts, and vertical shifts of trigonometric functions. This handout includes instructions for graphing processes of basic, amplitude shifts, 1 How to Graph Trigonometric Functions Created September 2013 How to Graph Trigonometric Functions ![]()
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