Projection of a Vector on Another Vector

Projection of a Vector on Another Vector

The scalar projection of $$\vec a$$ on $$\vec b$$ is:

$$\operatorname{proj}_{\vec b}(\vec a)=|\vec a|\cos\theta$$

or:

$$\operatorname{proj}_{\vec b}(\vec a)=\frac{\vec a\cdot\vec b}{|\vec b|}$$

Usage

- Used to find the component of one vector along another.