Calculus III: The Dot Product (Level 4 of 12)

The video tutorial covers advanced examples of the dot product, starting with unit vectors in an equilateral triangle and calculating their dot products. It then applies the dot product to a real-world scenario involving a street vendor's revenue. The tutorial explains how to find vectors perpendicular to a given vector and solve for values that make vectors orthogonal. The video concludes with a preview of the next topic: finding angles between vectors.

What new insight or understanding did you gain from this video?