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September 19, 2014

Homework Help: Trigonometry

Posted by ` on Wednesday, April 21, 2010 at 4:06pm.

Solve for x in the interval 0<=x<360:

1. 2sin2x+cosx =0
2. cos2x=-2sinx
3. tanx=2sinx
4. 3cos2x+cosx+2=0

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