(a(i))[1]
Show that angle $CBD = 81^\circ$.
(a(ii))[3]
Calculate $CD$ from the information given.
(a(iii))[4]
Show that angle $ABD = 31.6^\circ$, correct to 1 decimal place, from the information provided.
(a(iv))[3]
Find the shortest distance from $A$ to $BD$.
(a(v))[2]
Find the bearing of $B$ as seen from $C$.
(a(vi))[4]
Calculate the total number of trees to be planted in the field.
(b)[3]
Calculate the upper bound for the rectangle's width.