F.3,,,wt is the height?
2008-07-21 2:46 am
回答 (1)
2008-07-21 3:23 am
✔ 最佳答案
The height of BC = h m AD = AC - CD
hence,
100 = h / tan30o - h / tan45o
so
h = 137m
參考: me
收錄日期: 2021-04-13 15:50:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080720000051KK02077