Question

if A vector + B vector is a unit vector along x-axis and A vector =i^ +j^ +k^, then what is B vector?​

Answer 1

vector A+ vectorB is a unit vector that means their magnitude is 1 and they are along x axis. So we can write

vector A + vectorB =i^

therefore, vectorB =i^-i^- j^ -k^

=-j^- k^