A directory of useful objects found on the web for teaching Maths.
http://www.analyzemath.com/unitcircle/unit_circle_applet.html
Interactive, Visualization
This is an HTML5 applet to explain several concepts in trigonometry such as angle, sine, cosine and tangent functions. You can select one function at a time but also 2 or 3 function to observe any relationships.
10 October 2016 Edit: 9 October 2016
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