$\hat{i} . (\hat{j} \times \hat{k})+\hat{j} . (\hat{k} \times \hat{i})+\hat{k} . (\hat{i} \times \hat{j})$ is equal to
Answer & explanation
Correct answer: option 3
$\hat{i} . (\hat{j} \times \hat{k})+\hat{j} . (\hat{k} \times \hat{i})+\hat{k} . (\hat{i} \times \hat{j})$
$=\hat{i} . (\hat{i})+\hat{j} . (\hat{j})+\hat{k} .(\hat{k})$
= 1 + 1 + 1 = 3
Option: C