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December 21, 2014

December 21, 2014

Posted by **Mary** on Wednesday, April 24, 2013 at 10:59am.

- Pre-Calculus -
**Steve**, Wednesday, April 24, 2013 at 11:06amtan(arctan 1/3 + arctan 2/3)

= (1/3 + 2/3)/(1-(1/3)(2/3)) = 9/7

arctan(9/7) = 52.13°

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