Dot Product between Two Vectors, Orthogonal, Projection - Linear Algebra

This video explains the dot product formula between two vectors a and b, including the diagram and symbol, what does it tell us, orthogonal and parallel projections, and why it is always 0 when vectors are perpendicular.

0:00 Orthogonality of vectors
2:51 Point-normal equations of a line and plane using the dot product
7:36 Vector projection equation