JEE Main & Advanced Mathematics Vector Algebra Question Bank Numerical Value Type Questions - Vector

  • question_answer If \[|\overrightarrow{a}|\,\,=\,\,|\vec{b}|=1\] and \[|\overrightarrow{a}\,+\,\overrightarrow{b}|=\sqrt{3,}\] then find the value of \[\left( 3\,\,\overrightarrow{a}-4\,\vec{b} \right).\left( 2\,\overrightarrow{a}+5\,\overrightarrow{b} \right).\]

    Answer:

    -10.50


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