Thread: Anayltic geometry
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Old June 26th, 2009, 12:33 PM
Plato Plato is offline
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You have found the correct anawer.

Here is an easy to remember formula: \begin{gathered} P = (p,q)\;\& \,\ell :Ax + By + C = 0 \hfill \\ d(P;\ell ) = \frac{{\left| {Ap + Bq + C} \right|}} {{\sqrt {A^2 + B^2 } }} \hfill \\ \end{gathered}

I would choose a easy to use point on the second line say (3,-4) and use the formula to find the distance to the other line.
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