Question

If $\overrightarrow{P}.\overrightarrow{Q}$ = PQ then angle between $\overrightarrow{P}$ and $\overrightarrow{Q}$

• A. zero
• B. $\pi$/2
• C. $\pi$
• D. none of the above.

Answer 1

Answer: (A)

$\overrightarrow{P}.\overrightarrow{Q}$ = PQ cos $\theta$ = PQ . Hence, cos $\theta$ = 1 .Which given $\theta =0^0$