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Member Since 31-08-2006
Offline Last Active 30-09-2006 - 15:29

30-09-2006 - 15:23

$cotgA+cotgB+cotgC \geq \sqrt{3}$

30-09-2006 - 15:19

$cotgA+cotgB+cotgC \geq \sqrt{3}$

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