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Support Material: The Unit Circle, Sine, and Cosine (Trigonometry)
Go to:,_Sine,_and_Cosine.html (opens a new window)
Description: This mini-lesson explains the relationship of sine and cosine to the unit circle.
Technology Type: Flash 
Author: Winpossible
Language: English 
Cost: Does not require payment for use

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Courses: Trigonometry sin, cos and tan, The Unit Circle