圓O半徑為r,弦AB將圓O分為S和s兩弓形,⦟AOB = x。求:麵積比s / S =?

來源: 2011-12-01 09:36:01 [博客] [舊帖] [給我悄悄話] 本文已被閱讀:

 

 

 

O半徑為r,弦AB將圓O分為Ss兩弓形,AOB = x0 <= x <= pi。求:麵積比 s/S =