Q. If $\overrightarrow{A} \bullet \overrightarrow{B} = AB,$ then the angle between $\overrightarrow{A}$ and $\overrightarrow{B}$ is
A) 0${^\circ}$
B) 45${^\circ}$
C) 90${^\circ}$
D) 180${^\circ}$
Explanation
(a) $AB\cos\theta\ $=$\ AB$ or${\ cos}\theta = 1\ $ or $\theta = 0{^\circ}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.