$\overrightarrow{\mathrm{A}}=3 \hat{\mathrm{i}}-2 \hat{\mathrm{j}}+6 \hat{\mathrm{k}}, \overrightarrow{\mathrm{A}}$ এর দিকে একক ভেক্টর কত?

$\frac{3}{7} \hat{\mathrm{i}}-\frac{2}{7} \hat{\mathrm{j}}+\frac{6}{7} \hat{\mathrm{k}}$

$\frac{3}{7} \hat{\mathrm{i}}+\frac{2}{7} \hat{\mathrm{j}}+\frac{6}{7} \hat{\mathrm{k}}$

$\frac{1}{2} \hat{\mathrm{i}}-\frac{1}{3} \hat{\mathrm{j}}+\hat{\mathrm{k}}$

$\frac{1}{2} \hat{\mathrm{i}}+\frac{1}{3} \hat{\mathrm{j}}+\hat{\mathrm{k}}$