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If two vertices of an equilateral triang...

If two vertices of an equilateral triangle are `A (-a,0)and B (a,0), a gt 0,` and the third vertex C lies above y-axis, then the equation of the circumcircle of `Delta ABC` is :

A

`3x^(2) +3y^(2) -2 sqrt3 ay = 3a^(2)`

B

`3x^(2) +3y^(2)-2ay= 3a^(2)`

C

`x^(2) +y^(2)-2ay = a^(2)`

D

`x^(2) +y^(2)- sqrt3 ay= a^(2)`

Text Solution

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The correct Answer is:
A
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