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The real explanation of the radian in visual

Author:Daniel Mentrard
Topic:Circle, Trigonometry

http://dmentrard.free.fr/GEOGEBRA/Maths/explaradian2iMD.html

http://dmentrard.free.fr/GEOGEBRA/Maths/explaradian2iMD.html
http://dmentrard.free.fr/GEOGEBRA/Maths/explaradian2iMD.html

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