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06-10-2017
Mathematics

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Find the equation of the circle with center at the origin that contains the point ( 12 , 9 ) (12,9).

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07-10-2017

Radius is the length of line from centre to (12,9)
Equation of circle: (x-12)+(y-9)=r^2
r=√12^2+9^2=√169
r^2=(√169)^2=169
hence, (x-12)+(y-9)=169

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