(a)[2]
Find $m$, and give your answer correct to $1$ significant figure.
(b)[1]
Measure the bearing from $B$ to $A$.
(c)[2]
A third boat lies at $C$. $C$ is on a bearing of $120^\circ$ from $A$ and on a bearing of $195^\circ$ from $B$. Find and label $C$ on the diagram.
(d)[2]
Find, by measuring, the actual distance from $A$ to $C$ in kilometres.
(e(i))[3]
The diagram shows boats $A$ and $B$ together with a harbour $H$. $AB = 4\text{ km}$, $AH = 6\text{ km}$ and $\angle ABH = 70^\circ$. Calculate $\angle AHB$.
(e(ii))[3]
The boat at $A$ travels straight to the harbour at $H$. Its average speed is $p\text{ km/h}$. The journey from $A$ to $H$ takes $12$ minutes $20$ seconds. Calculate $p$.