A Geometry Q from GMATPrep S/w

HI All,
Please help me ans this question. This is a GMATPrep free CAT question. I have attacjed fig. It's not exactly same, but I'll try to explain as much as possible.

In the fig. , 2 lines from points A and B are perpendicular to each other and are of same length. If coordinates of pt A are (-(3)^1/2 , 1), what is the x-coordinate of point B.

1. 3^1/2
2. 1


Note: In actual Qs, these lines are in a semi-circle, unable to draw one here
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Attachments
fig1.jpg [ 9.28 KiB | Viewed 26 times ]

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