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The circle x^(2)+y^(2)-4x-4y+4=0 is insc...

The circle `x^(2)+y^(2)-4x-4y+4=0` is inscribed in a triangle which has two of its sides along the coordinate axes. The locus of the circumcentre of the triangle is `x+y-xy+k(x^(2)+y^(2))^(1//2)=0`. Find k.

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The correct Answer is:
`k+-1`
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