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I need to remember the formula for the law of cosines, \(c^2=a^2+b^2-2ab*cos(C)\), but I dont have any devices to help me out. Please reply. I have an important test tomorrow and we won't be allowed to use notes. 

 Mar 8, 2016
 #1
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Seems pretty easy to remember to me, thats the least of your worries by the sounds of it.

 Mar 8, 2016

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