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equation of circle touching x=0, y=0 and x=4 is ______

equation of circle touching x=0, y=0 and x=4 is ______

Grade:12th pass

1 Answers

Nishant Vora IIT Patna
askIITians Faculty 2467 Points
6 years ago

Suppose the centre is (h,k)
So the equation of circlle is (x-h)^2 + (y-k)^2 = r^2
Now this circle touches coordinate axis
so h=k=r
(x-r)^2 + (y-r)^2 = r^2

Also this circle touches x=4
Apply this condition and find r


that gives you eqn of circle

Thanks

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