Question

If $\overrightarrow{A}.\overrightarrow{B}=0$, the angle between the vectors A and B will be:

• A. 0${}^o$
• B. 60${}^o$
• C. 90${}^o$
• D. 180${}^o$

Answer 1

Answer: (C)

90${}^o$

$\overrightarrow{A}.\overrightarrow{B}=|\overrightarrow{A}||\overrightarrow{B}|\cos \theta$
$\overrightarrow{A}.\overrightarrow{B}=0$
$\Rightarrow \cos \theta =0$
$\Rightarrow \theta ={90}^0$