圆O半径为r,弦AB将圆O分为S和s两弓形,⦟AOB = x。求:面积比s / S =?
皆兄弟也
2011-12-01 09:36:01
( reads)
圆O半径为r,弦AB将圆O分为S和s两弓形,⦟AOB = x,0 <= x <= pi。求:面积比 s/S =?
wxcfan123
2011-12-01 10:02:41回复:圆O半径为r,弦AB将圆O分为S和s两弓形,⦟AOB = x。求:面积比s / S =?