i ,. ,(j k) + j ,. ,(k i) + k ,. ,(i j) = - Vidyadip

Question

$i\,.\,(j \times k) + j\,.\,(k \times i) + k\,.\,(i \times j) = $

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Answer

b
(b) $i\,.\,(j \times k) + j\,.\,(k \times i) + k.(i \times j)$=$i\,.\,i + j\,.\,j + k\,.\,k = 3.$

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