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 =?
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 =?
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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 =?
-wxcfan123-
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12/01/2011 postreply
10:02:41
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谢谢!面积比s / S =( x - sinx)/(2pi - x + sinx),与圆半径 r 无关。
-皆兄弟也-
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12/01/2011 postreply
22:32:17
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题解。
-皆兄弟也-
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12/03/2011 postreply
11:25:56
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