1.

जि + |. (139 + ६ (191 का सान जात करे |

Answer»

Let vector a be i( j x k ) + j( i x k ) + k( ix j ).

Now, ( j x k ) = i

( i x k ) = - j

and( i x j ) = k

Therefore, the magnitude of vector a = ( i.i ) + { j. (-j) } + ( k. k )

= 1 - 1 + 1

= 1


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