问一道几何题

Let A and B be points on the lines y=3 and y=12, respectively. There are two circles passing through A and B that are also tangent to the x-axis, say at points P and Q. Suppose that PQ=2012. Determine the distance AB.

 

所有跟帖： 

• 勾股定律,2012.02? -xioduo- ♀ (0 bytes) () 04/21/2016 postreply 01:55:55

• 不失一般性，设点A同时在Y轴上，点A坐标为（0，3）， 设 点B的坐标为（B,12） -XYZ3- ♂ (944 bytes) () 04/21/2016 postreply 02:17:32

• 最后AB的长度是1509 -XYZ3- ♂ (373 bytes) () 04/21/2016 postreply 15:09:50

• 牛，实在是太牛了 -sfbayparent- ♂ (0 bytes) () 04/22/2016 postreply 03:06:11