Question

Projection vector of $\vec{a}$ on $\vec{b}$ is

• A. $\left(\frac{\vec{a} \times \vec{b}}{\left|\vec{b}\right|^{2}}\right) \vec{b}$
• B. $\frac{\vec{a} \cdot \vec{b}}{\left|\vec{b}\right|}$
• C. $\frac{\vec{a} \cdot \vec{b}}{\left|\vec{a}\right|}$
• D. $\left(\frac{\vec{a} \cdot \overrightarrow{b}}{\left|\vec{b}\right|^{2}}\right) \vec{b}$

Answer 1

Answer: (B)

Projection of $\vec{a}$ on $\vec{b}$ is $\frac{\vec{a} \cdot \vec{b}}{\left|\vec{b}\right|}$