Question

Please prove this formula :)

Answer 1

When we have the equation of the line,for example \( \large Ax + By + C = 0\)
and we have one point,for example \( \large (x _{1} , y _{1})\)
the distance is: \[\Large d = \frac{ |Ax _{1}+By _{1}+C| }{ \sqrt{A ^{2}+B ^{2}} }\]

Answer 2

want to measure perpendicular distance(nearest) from point to the line ?