(a)[1]
Find $\vec{AB}$ in its simplest form, in terms of $a$ and $b$.
(b)[3]
Find $\vec{MC}$ in its simplest form, in terms of $a$ and $b$.
Mathematics 0580 · IGCSE · Vector geometry
Vector geometry — practice question
The figure contains triangle $OAB$ together with the straight line $OAC$. The ratio $OA : OC = 2 : 5$, and $M$ is the midpoint of $AB$. Also, $\vec{OA} = \vec{a}$ and $\vec{OB} = \vec{b}$. The diagram is not drawn to scale.