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Law of cosine : proof without words

Author:Daniel Mentrard
Topic:Cosine, Trigonometry

http://dmentrard.free.fr/GEOGEBRA/Maths/coslaw2MD.html

http://dmentrard.free.fr/GEOGEBRA/Maths/coslaw2MD.html
http://dmentrard.free.fr/GEOGEBRA/Maths/coslaw2MD.html

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