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Activity: Graphs of Sine, Cosine, and Tangent
Go to: http://education.ti.com/.../Activity.do (opens a new window)
Description: Students are introduced to the shapes of the sine, cosine, and tangent graphs. They will use a unit circle to calculate the x and y lengths of a triangle placed at different values along the circle. Tools are provided which support them in collecting and organizing data, building and testing conjectures, while laying the foundations for future work in precalculus.
Technology Type: TI-Nspire 
Author: Texas Instruments
Language: English 
Cost: Does not require payment for use

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Courses: Trigonometry Definitions, Reference Angles, sin, cos and tan, Of Any Angle, The Unit Circle, Graphs of Functions