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Mathematics 13 Online
OpenStudy (anonymous):

The distance formula, , is the key element in the proof of which of the following? http://media.apexlearning.com/Images/201306/26/99ee1f1f-f97b-45ed-9662-002e1a119b53.gif The triangle inequality theorem B. The law of sines C. The law of cosines D. CPCTC

OpenStudy (sepeario):

Read this: http://www.pballew.net/lawofcos.htm

OpenStudy (sepeario):

I am sorry about you having to wait so long before getting an answer :(

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