(a(i))[2]
Make $p$ the subject in $5p + 7 = m$.
(a(ii))[3]
Make $p$ the subject in $y^2 - 2p^2 = h$.
(b(i))[1]
Express $\vec{OA}$ in column-vector form.
(b(ii))[1]
Express $\vec{AB}$ as a column vector.
(b(iii))[6]
Points $A$ and $B$ are on a circle with centre $O$. Calculate the length of arc $AB$.