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Asked: 2026-06-11T11:44:10+00:00

I have two lines one horizontal and one vertical, I have the equations of

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I have two lines one horizontal and one vertical, I have the equations of lines in the format:

enter image description here

and enter image description here as it is a horizontal line and enter image description here for the vertical line and I can calculate enter image description here because I know a point from which the lines passes by.

I want to calculate the perpendicular distance of a point in enter image description here space from each of these lines. I can’t use the slop as it will give divide by 0 error. What is the other approach?

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1 Answer

  1. Editorial Team

    In the horizontal line the equation is y = c and so the distance of any general point (a,b) from that line is simply |b-c|.

    In the vertical line, c is meaningless as the line never crosses the y axis (unless it is the y axis). The equation of such a line is x = d (you need to calculate d) then the distance of a point (a,b) from this line is simply |a-d|

    EDIT: By the way this question really has nothing at all to do with C++

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