已试，不算太繁，AB建x轴，O上建y轴，小圆半径r, C点(x,y), 可建3个方程，求出r

来源: 万斤油于 2022-02-03 22:20:46 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.