Please teach me how to do part （a）?
回答 (1)
2018-12-12 2:46 pm
✔ 最佳答案
r^2=OA^2=AM^2+OM^2=OC^2=CN^2+ON^2AM^2+OM^2=CN^2+ON^2
AB=CD ---> AM=CN ---> ON=OM ....Ans
20^2=(32/2)^2+ON^2 ---> ON=OM=12 ...Ans
收錄日期: 2021-04-24 01:13:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20181208130729AAXGVoh