Question
$\hat{i} \cdot(\hat{j} \times \hat{k})+\hat{j} \cdot(\hat{i} \times \hat{k})+\hat{k} \cdot(\hat{i} \times \hat{j})$ का मान है:
$=\hat{i} \cdot \hat{i}+\hat{j} \cdot(-\hat{j})+\hat{k}\cdot \hat{k}$
$=1-\hat{j} \cdot \hat{j}+1$
$=1-1+1$
$=1$
The correct answer is $A.$
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