Question

Find perpendicular unit vector of vectors \(\hat{i} - 2\hat{j} + \hat{k} \; and\; 2\hat{i} + \hat{j} - 3\hat{k}.\)

Answer 1

Then perpendicular unit vector of \(\vec{a}\) and  \(\vec{b}\)

∴ Perpendicular unit vector between \(\vec{a}\)and \(\vec{b}\),

Hence the perpendicular unit vector between \(\hat{i} - 2\hat{j} + \hat{k}\)