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OpenStudy (anonymous):
2cosx+2sinxcosx=0
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OpenStudy (amoodarya):
\[2cosx+2sinxcosx=0\\factor\\cos x\\2cosx (1+sinx)=0\\so\\2cosx=0\\or\\1+sinx=0\\\]
OpenStudy (amoodarya):
|dw:1409603444678:dw|
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