two side of △ABC are:
AB : 3x + 5y -13 = 0
AC : 11x + 7y +9 =0
H ( 12, 9 ) is the orthocentre of △ABC
the equation of the altitude AD is : x - 4y +24 =0
***Find the equation of BC
[F4 A.Math] Coordinate Geometry : family of straight lines
2007-04-21 11:31 pm
回答 (2)
2007-04-22 11:14 am
✔ 最佳答案
這三角形如圖所示：圖片參考：http://hk.geocities.com/namsm4e/p0114A.jpg
圖片參考：http://hk.geocities.com/namsm4e/p0114B.jpg
2007-04-22 3:09 am
point D係邊度??
收錄日期: 2021-04-24 08:29:29
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https://hk.answers.yahoo.com/question/index?qid=20070421000051KK02810