Distance from point to line (Shortest distance from (x0,y0) to line ax+by+c=0.)

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Shortest distance from (x0,y0) to line ax+by+c=0.

What each symbol means

SymbolWhat it stands for
a,b,cCoefficients of line ax+by+c=0
(x0,y0)Point

When to use this

a,b not both zero.