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Solve the equation for x: sin2x+cosx=0

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Solve the equation for x: sin2x+cosx=0
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Dolly ?️ 6 years, 10 months ago

2sinx.cosx+cosx=0 Cosx(2sinx+1)=0 Cosx=0 and sinx=-1/2 Cosx=0 and sinx=sin120
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