A vector, its magnitude and angle between two vectors do not depend on the choice of orientation of the co-ordination of the coordinate axes. Therefore, (vector A + B,|A + B -C|) angle between (vector B and C and λ A) are independent of orientation of the co-ordination axes. Because, the quantity BAx + 2By depends upon the magnitude of components along x and y-axes, it will the change of co-ordinate axes.