If C and D are on L2 then the vectors C and D satisfy L2. Furthermore since AB=PC=PD then PC and PD are in the same direction as L2 and since C and D lie on L2 then PC and DP are on the line L2.
So you can use PC and DP and the equation for L2 to get some simultaneous equations which you can solve to work out the co-ordinates of C and D.
So you can use PC and DP and the equation for L2 to get some simultaneous equations which you can solve to work out the co-ordinates of C and D.
Original post by poorform
If C and D are on L2 then the vectors C and D satisfy L2. Furthermore since AB=PC=PD then PC and PD are in the same direction as L2 and since C and D lie on L2 then PC and DP are on the line L2.
So you can use PC and DP and the equation for L2 to get some simultaneous equations which you can solve to work out the co-ordinates of C and D.
So you can use PC and DP and the equation for L2 to get some simultaneous equations which you can solve to work out the co-ordinates of C and D.
Okay. Thank you.
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