Tuesday
July 22, 2014

Homework Help: Math (Trigonometry)

Posted by mtd on Wednesday, April 9, 2008 at 1:37pm.

square root(a^2 -u^2) where a>0, let u=(a sinx) where -pi/2<x<pi/2

answer is (a cosx) and I don't know how to get there

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