The reals are a subset of the complex numbers (with a 0 argument). I don’t know how wolfram evaluates it, but I’m guessing that they treat it as a complex number so that they can give a well defined answer.

It is unable to be determined; therefore, it is indeterminate.

Heh, I guess I wasn’t as sure about translation of mathematical terms as I thoughts. To me, 1/0 would be “undefined” and 0/0 would be “not well-defined”. I guess I’m just handicapped from learning math in my native tongue.