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Re: precalculus

Second question:
2.) 2sinX+cosX=0

2sinXcosX+cosX=0

cosX(2sinX+1)=0


cosX=0

x= pi/2, 3pi/2


2sinX+1=0

2sinX= -1
sinX= -1/2

x= 7pi/6, 11pi/6

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Re: precalculus - by kathy - Nov 28, 2003 4:09pm
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