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Tool: Inequalities of Cosine
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Go to: http://www.ies-math.com/.../trifutocos1.html (opens a new window)
Description: This applet shows geometrically the solution set to inequalities cos t >= a or cos t <= a. The function graph is also displayed and updated.
Technology Type: Java Applet 
Author: International Education Software (IES)
Language: English 
Cost: Does not require payment for use

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Courses: Trigonometry sin, cos and tan, The Unit Circle, Graphs of Functions, Solving Trig Equations