Calculate $AD$ and demonstrate that it rounds to $94.5\,\text{m}$, correct to 1 decimal place.
(a(ii))[3]
Calculate the angle $BAC$.
(a(iii))[4]
Calculate the biggest angle in triangle $CAD$.
(b)[3]
Calculate the perpendicular distance from $R$ to line $PQ$.
Worked solution & mark scheme
This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$\tan64=\frac{AD}{46.1}$, which is the ratio to use.” …