Image:Ptolemy cos.jpg

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Diagram used in a proof of the Law of Cosines using Ptolemy's theorem

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	Date/Time	Dimensions	User	Comment
current	14:33, 6 December 2007	783×1,023 (41 KB)	Neil Parker (Talk \| contribs)	(Diagram used in a proof of the Law of Cosines using Ptolemy's theorem)