【初三数学[圆]习题,急.在直角三角形AOB中,角AOB=90度,以OA为半径的圆交斜边AB于点C.若OA=5,OB=12,求BC长file:///C:/Documents%20and%20Settings/hp/My%20Documents/My%20Pictures/tu.JPG】

　　初三数学[圆]习题,急.

　　在直角三角形AOB中,角AOB=90度,以OA为半径的圆交斜边AB于点C.若OA=5,OB=12,求BC长

　　file:///C:/Documents%20and%20Settings/hp/My%20Documents/My%20Pictures/tu.JPG