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A line meets the coordinate axes at A an...

A line meets the coordinate axes at A and B. A circle is circumscribed obout the triangle OAB. If the distance of the points A and B from the tangent at O, the origin, to the circle ar m and n respectively, find the equation of the circle.

A

`m(m+n)`

B

`m+n`

C

`n(m+n)`

D

`""^(1)//_(2) (m+n)`

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