Practicing Success
Practicing Success
CUET Preparation Today
The value of $\hat{i} . (\hat{j} \times \hat{k})+\hat{j} . (\hat{i} \times \hat{k})+\hat{k} . (\hat{i} \times \hat{j})$ is |
0 -1 1 3 |
1 |
Using cycle rule
$\hat{i} . (\hat{j} \times \hat{k})+\hat{j} . (\hat{i} \times \hat{k})+\hat{k} . (\hat{i} \times \hat{j})$ $= \hat{i} . \hat{i}+\hat{j} . (-\hat{j})+\hat{k} . (\hat{k})$ = 1 - 1 + 1 = 1 |
