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HEEELPPP!!!!Give the equation of the circle with the radius 5 whose center is the the origin.
 one year ago
 one year ago
HEEELPPP!!!!Give the equation of the circle with the radius 5 whose center is the the origin.
 one year ago
 one year ago

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richywBest ResponseYou've already chosen the best response.1
the equation for a circle centered at the point \((a,b)\) with radius \(r\) is\[(xa)^2 + (yb)^2 = r^2\]
 one year ago

richywBest ResponseYou've already chosen the best response.1
and you know it is at the origin, so you have \(a,b\) and \(r\). Just plug it in!
 one year ago

richywBest ResponseYou've already chosen the best response.1
Or in polar coordinates you can just say \(r(\theta)=5\)
 one year ago
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