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AB與兩個圓分別相切於P和Q , O , O'是圓心 . 求x
(中四)圓的問題
2007-06-08 6:09 am
回答 (3)
2007-06-08 6:16 am
✔ 最佳答案
角OPQ = 90角O'QP = 90
角OO'Q = 角POO' = 36
x = 1/2 角OO'Q = 18
2007-06-08 6:18 am
x = 36/2
= 18
= 18
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070607000051KK04446