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November 20, 2014

November 20, 2014

Posted by **Anonymous** on Wednesday, April 17, 2013 at 11:31pm.

2cos^2(theta)=cos(theta), 0<theta<2pi

- tri -
**Steve**, Thursday, April 18, 2013 at 5:42am2cos^2 - cos = 0

cos(2-cos) = 0

cos=0 or 2

so, theta = ?

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