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

  • question_answer
    If \[\vec{u},\vec{v},\vec{w}\] are vectors such that \[\vec{u}+\vec{v}+\vec{w}=0,\]\[\left| {\vec{u}} \right|=3,\,\,\left| {\vec{v}} \right|=4\,\,\left| {\vec{w}} \right|=5,\] then find value of \[\vec{u}.\vec{v}+\vec{v}.\vec{w}+\vec{w}.\vec{u}.\]

    Answer:

    -25.00


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