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Best Answer dark_magician_92 , 06 April 2013 - 11:37 AM

Spoiler for is it

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#11 bonanova

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Posted 09 April 2013 - 11:26 AM

Spoiler for geometric proof

 

Nice proof. I overlooked the significance of the right angle in my solution.


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#12 BMAD

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Posted 09 April 2013 - 04:59 PM

Spoiler for Calculus proof


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