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The three vector vec(A) = 3hat(i)-2hat(j...

The three vector `vec(A) = 3hat(i)-2hat(j)+hat(k), vec(B)= hat(i)-3hat(j)+5hat(k)` and `vec(C )= 2hat(i)+hat(j)-4hat(k)` form

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Prove that `AB = BC = CA`.
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