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What is the area of the triangle OAB whe...

What is the area of the triangle OAB where O is the origin, `vec(OA)=3hat(i)-hat(j)+hat(k) and vec(OB)=2hat(i)-hat(j)+3hat(k)` ?

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The correct Answer is:
`(1)/(2)5sqrt(6)` sq. units.
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