Assertion (A): Projection of a on b is same as projection of b on a. Reason (R): Angle between a and b is same as angle between b and a numerically.

Assertion (A) : Projection of $\displaystyle \overrightarrow{\mathrm{a}}$ on $\displaystyle \overrightarrow{\mathrm{b}}$ is same as projection of $\displaystyle \overrightarrow{\mathrm{b}}$ on $\displaystyle \overrightarrow{\mathrm{a}}$. Reason $\displaystyle (R)$ : Angle between $\displaystyle \overrightarrow{\mathrm{a}}$ and $\displaystyle \overrightarrow{\mathrm{b}}$ is same as angle between $\displaystyle \overrightarrow{\mathrm{b}}$ and $\displaystyle \overrightarrow{\mathrm{a}}$ numerically.