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peekaboopork

  • 3 years ago

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

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  1. richyw
    • 3 years ago
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    the equation for a circle centered at the point \((a,b)\) with radius \(r\) is\[(x-a)^2 + (y-b)^2 = r^2\]

  2. richyw
    • 3 years ago
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    and you know it is at the origin, so you have \(a,b\) and \(r\). Just plug it in!

  3. richyw
    • 3 years ago
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    Or in polar coordinates you can just say \(r(\theta)=5\)

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