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BMDjackson
Dec 15, 2010, 12:41 PM
2cosxsinx+sinx=0
ebaines
Dec 15, 2010, 01:09 PM
Just a little manipulation: 2cosxsinx+ sinx = 0 leads to:
2sinx(cosx+1/2) = 0
So either sinx=0 or cosx = -1/2. Can you take it from here and tell us what x may be?