Let bar(a) = 2bar(i)-bar(j)+bar(k), bar(...

Let `bar(a) = 2bar(i)-bar(j)+bar(k), bar(b) = 3bar(i) + 4bar(j) -bar(k)` and if `theta` is the angle between `bar(a), bar(b)` then find `sin theta`.

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The correct Answer is:

`=sqrt((155)/(156))`

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