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Cosine Rule Proof
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Law Proof
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of Cosine
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Function
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Function
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hubpages.com
Proof of the cosine rule. Proving the cosine rule using Pythagoras and Trigonometry.
In this hub page I will show you how you can prove the cosine rule: a² = b² c² -2bcCosA First of all draw a scalene triangle and name the vertices A,B and C. The capital letters represent the angles and the small letters represent the side...
May 3, 2011
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