In the figure, AT is tangent to the circle at T and ABC is a straight line.
Find AT.
更新1:
Sorry, the figure should be here: http://img214.imageshack.us/img214/8046/81919587.jpg
F5 Maths
2010-10-14 8:10 pm
Figure: http://img814.imageshack.us/img814/68/17867979.jpg
In the figure, AT is tangent to the circle at T and ABC is a straight line.
Find AT.
In the figure, AT is tangent to the circle at T and ABC is a straight line.
Find AT.
回答 (1)
2010-10-14 9:20 pm
✔ 最佳答案
Where is T ??Wrong figure ??
2010-10-14 13:20:06 補充：
圖片參考：http://img214.imageshack.us/img214/8046/81919587.jpg
ㄥACT = ㄥBTA (∠in alt. segment)
ㄥCAT = ㄥCAT (common)
△ATB ~ △ACT (A.A.)
AT/9 = (16 + 9)/AT
AT² = 9 * 25
AT = 15
收錄日期: 2021-04-21 22:17:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101014000051KK00436