Teacher2Teacher |
Q&A #1895 |
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Part of our new grade ten curriculum here in Ontario, Canada includes the use of the formula d = Abs(Ax+By+C)/Sqrt(A^2+B^2). Sorry about the form! It is not difficult to show this using specific examples where the point and the equation of the line are given, but the usual derivation (using the dot product) is of no use here. Any ideas? Carolyn
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