Dot products of unit vectors for JEE

Formula

\(\hat{i}\cdot\hat{i}=\hat{j}\cdot\hat{j}=\hat{k}\cdot\hat{k}=1,\quad \hat{i}\cdot\hat{j}=\hat{j}\cdot\hat{k}=\hat{k}\cdot\hat{i}=0\)

Conditions: For mutually perpendicular standard unit vectors.

Expanding dot products in component form.