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April 18, 2015

April 18, 2015

Posted by **Kristen** on Sunday, February 24, 2008 at 9:45pm.

- precalc -
**Reiny**, Sunday, February 24, 2008 at 11:41pmx/2 = cos theta and y/4 = sin theta

but sin^2 (theta) + cos^2 (theta) = 1

x^2/4 + y^2/16 = 1

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