Friday
April 18, 2014

Homework Help: trig

Posted by Sara on Saturday, June 19, 2010 at 1:06pm.

Solve for [0, 360)
2sinxcosx + cosx =0
2sinxcosx = -cosx
2sinx = -cosx/cosx
sinx = -1/2

{210, 330)

Is this correct?

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