A) \[{{x}^{2}}+{{y}^{2}}-ax-by=0\]
B) \[{{x}^{2}}+{{y}^{2}}+ax+by=0\]
C) \[{{x}^{2}}+{{y}^{2}}-ax+by=0\]
D) \[{{x}^{2}}+{{y}^{2}}+ax-by=0\]
Correct Answer: A
Solution :
Centre is \[\left( \frac{a}{2},\ \frac{b}{2} \right)\] and radius \[=\sqrt{\frac{{{a}^{2}}+{{b}^{2}}}{4}}\]You need to login to perform this action.
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