A formula you might have used ALL the time, but why is it true?
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: https://youtu.be/mqrTVQsrH7E
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