89. Given two vectors A = -2.00 i + 3.00 j + 4.00 k and B = 3.00 i +1.00 j -3.00 k, do the following. (a) Find the magnitude of each vector. (b) Write an expression for the vector difference $\vec{A}-\vec{B}$, using unit vectors. (c) Find the magnitude of the vector difference $\overrightarrow{\boldsymbol{A}}-\overrightarrow{\boldsymbol{B}}$. Is this the same as the magnitude of $\overrightarrow{\boldsymbol{B}}-\overrightarrow{\boldsymbol{A}} ?$ Explain.

 89. Given two vectors A = -2.00 i + 3.00 j + 4.00 k and B = 3.00 i +1.00 j -3.00 k, do the following. (a) Find the magnitude of each vector. (b) Write an expression for the vector difference $\vec{A}-\vec{B}$, using unit vectors. (c) Find the magnitude of the vector difference $\overrightarrow{\boldsymbol{A}}-\overrightarrow{\boldsymbol{B}}$. Is this the same as the magnitude of $\overrightarrow{\boldsymbol{B}}-\overrightarrow{\boldsymbol{A}} ?$ Explain.