If and , then find . Also, find a unit vector along…

MATHEMATICS · Subjective · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

\mathbf{a} = 2\hat{i} - \hat{j} + 2\hat{k}

and

\mathbf{b} = -\hat{i} + \hat{j} - \hat{k}

, then find

\mathbf{a} + \mathbf{b}

. Also, find a unit vector along

\mathbf{a} + \mathbf{b}