a circle S:X^2 +Y^2+6x-2y=0 cuts the axes at the origin O,A and C. a point B lies on the circle S so that the length of BC is 2√5 units.BC is produced to cut the x-axis at D.
(a) Find the coordinates of A and C.
(b) Prove that ΔCOD~ΔABD.Hene,find the coordinates of D.
(c)Find the coordinates of B.
photo:
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S:X^2 +Y^2+6x-2y=0
2013-07-23 6:47 am
回答 (1)
2013-07-23 8:44 am
✔ 最佳答案
圖片參考：http://i277.photobucket.com/albums/kk75/uncle_michael/20130723-1.jpg
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參考: Uncle Michael
收錄日期: 2021-04-23 23:07:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130722000051KK00348