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Let bara and barb be vectors,satisfying ...

Let `bara` and `barb` be vectors,satisfying `|bara|=|barb|=5` and `(bara,barb)=45^(@)`. Find the area of the triangle having `bara-2barb` and `3bara+2barb` as two of its sides.

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The correct Answer is:
`50sqrt(2)`sq. units
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