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If one vertex of an equilateral triangle...

If one vertex of an equilateral triangle of side 'a' lie at the origin and the other lies on the line `x-sqrt3 y = 0`, the co-ordinates of the third vertex are:

A

`(0,a)`

B

`((sqrt(3a))/2,(-a)/2)`

C

`(0,-a)`

D

`((-sqrt(3)a)/2,a/2)`

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