http://upload.lsforum.net/users/public/p20661454444444444p244.jpg
74.1m= the ans
做exercise差呢題唔識...
1條f.3 MATHS 題,急10分 考試用
2013-05-17 3:28 am
回答 (1)
2013-05-17 4:33 am
✔ 最佳答案
Let the horizontal distance between the wheel and the tower is x the vertial distance between A and C is y
Then tan24 = y/x and tan35 = (27 + y)/x
So, y/tan24 = (27 + y)/tan35
2.246y = 1.4281(27 + y)
0.8179y = 38.5587
y = 47.1435
So, the height of the tower is 74.1 m
收錄日期: 2021-04-27 19:21:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130516000051KK00242