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Activity: Exploring Trigonometric Functions
Go to: http://www.teacherlink.org/.../home.html (opens a new window)
Description: This activity has students geometrically construct and investigate the graphs of sine and cosine based upon the lengths of the sides of a reference triangle.
Technology Type: Sketchpad 
Author: teacherlink.org--Center for Technology and Teacher Education
Language: English 
Cost: Does not require payment for use

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Courses: Trigonometry The Unit Circle