As follows:
圖片參考：http://f.imagehost.org/0968/ScreenHunter_11_Jan_31_20_11.gif
maths~~~~~~
2010-02-01 4:16 am
回答 (1)
2010-02-01 4:25 am
✔ 最佳答案
tan θ : tan ? = [(AB+BC)/CD] : [BC/(CD+DE)]= [(AB+BC)/CD] * (CD+DE)/BC
= [ (AB+BC)/BC ] * (CD+DE)/CD
= [(2+3)/3] * (2+3)/2
= 25 : 6
收錄日期: 2021-04-21 22:08:16
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100131000051KK03511