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 \[\vec{u}.\vec{v}+\vec{v}.\vec{w}+\vec{w}.\vec{u}.\]