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April 21, 2015

April 21, 2015

Posted by **ama** on Sunday, July 1, 2012 at 1:29pm.

tan 50-tan20/1+ tan 50 tan20

- precalculus -
**Steve**, Sunday, July 1, 2012 at 5:33pmsince tan(A-B) = (tanA-tanB)/(1-tanAtanB) I'd say you're looking at tan30 = 1/√3

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