Distance entre un point et une droite en 3D : La méthode du point orthogonal

This source explains how to calculate the distance between a point and a line in three-dimensional space. The author details a method that involves identifying a specific point of intersection on the line to form a segment perpendicular to it. Using parametric equations and the direction vector of the line, the value of an unknown can be determined using the zero dot product. Once the coordinates of the point of intersection are found, the magnitude of the vector connecting the point of intersection to the line is calculated. This geometric approach allows us to obtain the exact measurement of the shortest distance between these two mathematical entities. Explain the key steps for calculating the point-line distance. How do I use the dot product to find the point of intersection? What is the difference between the coordinates of a point and a vector?