题目

Could your cellphone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and wi-fi could be responsible for a range of illnesses, from rashes to brain tumors. Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there’s a greater than 95 percent chance that power lines can cause childhood leukemia (白血病). Also there’s a greater than 90 percent chance that cellphones can cause brain tumors. “It’s （2006•江西）如图，在平面直角坐标系中，点A在第一象限，点B的坐标为（3，0），OA=2，∠AOB=60°．（1）求点A的坐标；（2）若直线AB交y轴于点C，求△AOC的面积．