Finding the distance from a point to a line (using vectors)

Try Brilliant with a 30-day free trial 👉 https://brilliant.org/blackpenredpen/ ( 20% off with this link!) We will see how to prove the formula for finding the distance from a point to a line using vectors. To see the connection between the dot product and the cosine of the angle between the vectors, check out this video:    • How to find the angle between two vectors ...   ---------------------------------------- Big thanks to my Patrons for the full-marathon support! Ben D, Grant S, Mark M, Phillippe S. Michael Z, Camille E. Nolan C. Jan P. Devun C. Stefan C. Budoray Ethan BW 💪 Support this channel and get my math notes by becoming a patron:   / blackpenredpen   🛍 Shop my math t-shirt & hoodies: https://amzn.to/3qBeuw6 ---------------------------------------- #blackpenredpen #math #calculus #apcalculus