4 The position vector of \(P\) is \(\mathbf { p } = \binom { 4 } { 3 }\) and the position vector of \(Q\) is \(\mathbf { q } = \binom { 28 } { 10 }\).
- Determine the magnitude of \(\overrightarrow { \mathrm { PQ } }\).
- Determine the angle between \(\overrightarrow { \mathrm { PQ } }\) and the positive \(x\)-direction.