Example 2: Find the Coordinates and the Magnitude of Cartesian Vectors between two Points Find the coordinates and the magnitude of each vector.
a) \( \overrightarrow{A B} \), for \( \mathrm{A}(1,3) \) and \( B(7,2) \)
b) \( \overrightarrow{C D} \), for \( C(-10,0) \) and \( D(0,10) \)
c) \( \overrightarrow{E F} \), for \( E(4,-3) \) and \( F(1,-7) \)