1.

The equation of the circumcircle of the triangle formed by the lines \[y+\sqrt{3}x=6,\ y-\sqrt{3}x=6,\] and \[y=0\], is  [EAMCET 1982]

A.            \[{{x}^{2}}+{{y}^{2}}-4y=0\]                                          
B.            \[{{x}^{2}}+{{y}^{2}}+4x=0\]
C.            \[{{x}^{2}}+{{y}^{2}}-4y=12\]                                       
D.            \[{{x}^{2}}+{{y}^{2}}+4x=12\]
Answer» D.            \[{{x}^{2}}+{{y}^{2}}+4x=12\]


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