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December 20, 2014

December 20, 2014

Posted by **Anonymous** on Monday, November 5, 2012 at 2:00pm.

- Math -
**Steve**, Monday, November 5, 2012 at 3:33pmsince tan θ/2 = (1-cosθ)/sinθ

tan π/8 = (1-1/√2)/(1/√2) = √2-1

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