8 With respect to an origin O , the position vectors of the points A and B are
\(\overrightarrow { \mathrm { OA } } = \binom { - 3 } { 20 }\) and \(\overrightarrow { \mathrm { OB } } = \binom { 6 } { 8 }\).
- Determine whether \(| \overrightarrow { \mathrm { AB } } | > 200\).
The point C is such that \(\overrightarrow { \mathrm { AC } } = \binom { 18 } { - 24 }\).
- Determine whether \(\mathrm { A } , \mathrm { B }\) and C are collinear.