Jambmaths question:
A man stands on a tree 150cm high and see a boat at an angle of depression of 74o, Find the distance of the boat from the base of the tree.
Option A:
52cm
Option B:
43cm
Option C:
40cm
Option D:
15cm
Jamb Maths Solution:
$\begin{align} & A\overset{\wedge }{\mathop{B}}\,D=B\overset{\wedge }{\mathop{D}}\,C={{74}^{\circ }} \\ & DC=\frac{150}{\tan {{74}^{\circ }}}=\frac{150}{\text{3}\text{.4874}} \\ & DC\approx 43cm \\\end{align}$
Jamb Maths Topic:
Year of Exam: