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Let veca and vecb be vectors, satisfying...

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

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The correct Answer is:
`50sqrt2` sq. units.
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