http://img520.imageshack.us/img520/9580/56788025.th.jpg [Broken]

See the problem above. I can do all of the problem, barring the last part. I have found r and r.r:

http://img520.imageshack.us/img520/1590/29349935.jpg [Broken]

How does this allow me to find the minimum and maximum distance?

Thanks in advance

See the problem above. I can do all of the problem, barring the last part. I have found r and r.r:

http://img520.imageshack.us/img520/1590/29349935.jpg [Broken]

How does this allow me to find the minimum and maximum distance?

Thanks in advance

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