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\(\vec{A}\) ও \(\vec{B}\) কে সন্নিহিত বাহু ধরে অঙ্কিত ত্রিভুজের ক্ষেত্রফল -
[ রাঃ ২০১৬ ]

\(\vec{A}.\vec{B}\)
\(|\vec{A}\times{\vec{B}}|\)
\(\frac{1}{2}|\vec{A}\times{\vec{B}}|\)
\(\frac{1}{2}|\vec{A}.\vec{B}|\)
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Ans: \(\frac{1}{2}|\vec{A}\times{\vec{B}}|\)
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