1.

x^(2)+y^(2)-4x-4y+7=0 and x^(2)+y^(2)4x+4y+7=0 are equation of excircleopposite to B and C respectively in a DeltaABC, then

Answer»

`A = (0,0)`
`AB=AC`
`DeltaABC"can be equilateral"`
`DeltaABC "can not be equilateral"`

SOLUTION :`O_(1)=(2,2),r_(1)=1`
`O_(2)=(-2,-2),r_(2)=1`
`impliesA=(0,0)`


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