(a(i))[4]
Calculate the angle $QPR$.
(a(ii))[3]
Find the minimum distance from $Q$ to $PR$.
(b(i))[3]
Calculate the length $AG$.
(b(ii))[3]
Calculate the angle that $AG$ makes with the base $ABCD$.
(c)[5]
Find the bearing of ship $M$ from the lighthouse, $L$, and the distance between them.