國中數學有關圓的問題~
2011-11-05 8:50 pm
圖片參考：http://imgcld.yimg.com/8/n/AB06726273/o/101111050337813869552420.jpg
我要問類題第2題~
需要詳細的解答和說明
謝謝~～~~~
回答 (2)
2011-11-05 10:44 pm
2011-11-05 10:09 pm
(1) 三角形O1AP~三角形O2BP
O1P/O1A = O2P/O2B
O1P/O2P = 2
因此O2P = 16/3
(2) O1P = 32/3
(3)
內公切線長 = √(16^2 - (8 + 4)^2) = √112 = 4√7
PA = (2/3)(4√7) = (8/3)√7
(4) PB = (4/3)√7
(5) AB = 4√7
O1P/O1A = O2P/O2B
O1P/O2P = 2
因此O2P = 16/3
(2) O1P = 32/3
(3)
內公切線長 = √(16^2 - (8 + 4)^2) = √112 = 4√7
PA = (2/3)(4√7) = (8/3)√7
(4) PB = (4/3)√7
(5) AB = 4√7
收錄日期: 2021-04-26 14:56:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111105000010KK03378