ভেক্টর  $\vec{A} = 2 \hat{i} - \hat{j} + 2 \hat{k}$ এর সমান্তরাল একক ভেক্টর-  

$\left ( \frac{2}{9} \right ) \hat{i} - \left ( \frac{1}{9} \right ) \hat{j} - \left ( \frac{2}{9} \right ) \hat{k}$  

$\left ( \frac{2}{3} \right ) \hat{i} - \left ( \frac{1}{3} \right ) \hat{j} + \left ( \frac{2}{3} \right ) \hat{k}$  

$\left ( \frac{2}{5} \right ) \hat{i} - \left ( \frac{1}{5} \right ) \hat{j} + \left ( \frac{2}{5} \right ) \hat{k}$  

$\hat{i} - \hat{j} + \hat{k}$