1. Angles of elevation and depression
Trigonometry

2. Angles of elevation and depression
From a point 65m from
the foot of a chimney,
the angle of elevation of
the top of the chimney is 52º.
Find the height of the chimney.
65m
52º

3.  Angles of elevation and depression From the top of a cliff,
the angle of depression
of a boat in the water 85m
from the foot of the
cliff is 34º.
Find the height of the cliff.
85 metres
34º
cliff
boat 

4. Angles of elevation and depression
From a point 44m away
from the foot of a tower,
the angle of elevation
of the top of the tower is 64º.
Find the height of the tower.
44 metres
64º T O W E R

5. Angles of elevation and depression
A pupil is 2 meters tall.
He walks 30 meters
away from the High
School main building.
The angle of elevation
of the top of
the building
is 29º.
Find the height
of the building.
30 metres 2m  
29º

6. Angles of elevation and depression
33º
29º 
boat 1
boat 2
CL I F F F
200m
A cliff is 200m high.
The angles of
depression from the
top of the cliff
of two
boats at
sea are
29º and 33º
respectively.
How far apart are the boats.