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I figured the X coordinates cancel each other out. For the Y:

kqAqB/r^2 cos 30 + kqAqC/r^2 cos 30

since all charges and sides are equal:

2(kq^2/r^2) cos 30

the answer I get is 1.56 *10^-2 but the website says that is not correct. Does anyone know what I am doing wrong??