- Find a unit vector perpendicular to the plane of two vectors and .

MATHEMATICS · Subjective · IB Diploma Programme · Mathematics: Analysis and Approaches · Geometry and Trigonometry · Geometry and Trigonometry

Problem

- Find a unit vector perpendicular to the plane of two vectors

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

and

\mathbf{b} = 2\hat{i} + 3\hat{j} - \hat{k}