Is It Possible to Align Points on Two Circles with a Given Vector?

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Homework Statement


I'm having difficulty on this problem:

"Two circles A, B ad a vector k are given. Determine points P on A and Q on B so that PQ is equal and parallel to k.
ii) describe the situation where this is impossible"

any body out there a master on circles, greatly appreciated!


Homework Equations





The Attempt at a Solution

 
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Well it seems a lot of information such as the radii of the circles, relative position of the centre of the circles, as well as the vector k are not given.
 

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