સદિશ $5 \hat{i}-\hat{j}+2 \hat{k}$ ની દિશામાં $8$ એકમ માન ધરાવતો સદિશ શોધો.

• A
  $\frac{40}{\sqrt{30}}\hat{i} - \frac{8}{\sqrt{30}}\hat{j} + \frac{16}{\sqrt{30}}\hat{k}$
• B
  $\frac{40}{\sqrt{30}}\hat{i} + \frac{8}{\sqrt{30}}\hat{j} - \frac{16}{\sqrt{30}}\hat{k}$
• C
  $\frac{8}{\sqrt{30}}\hat{i} - \frac{40}{\sqrt{30}}\hat{j} + \frac{16}{\sqrt{30}}\hat{k}$
• D
  $\frac{40}{\sqrt{30}}\hat{i} - \frac{16}{\sqrt{30}}\hat{j} + \frac{8}{\sqrt{30}}\hat{k}$