1.

[hati hatk hatj]+[hatk hatj hati]+[hatj hatk hati] is equal to

Answer»

1
3
`-3`
`-1`

SOLUTION :`[HAT(i)hat(k)hat(J)]+[hat(k)hat(j)hat(i)]+[hat(j)hat(k)hat(i)]=[hat(i)hat(k)hat(j)]+[hat(i)hat(k)hat(j)]-[hat(i)hat(k)hat(j)]=[hat(i)hat(k)hat(j)]=hat(i).(hat(k)xxhat(j))=hat(i).(-hat(i))=-1`


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