4
3
2
Exercise 13.6
from
A woman 1.65 m tall stood 50 m away
the foot of
a tower and observed
that the
angle of
elevation of the top
of the
tower
to be
50°. What is the height
of the tower
?
A young
man 1.7 m tall,
while standing
,
measures
the angle of elevation
of the top
of a pole
as 40°. If he is 15
m from the
pole, what is
the height of the
pole?
The angle
of depression of a boat
from the
midpoint
of a vertical cliff is 35
°
. If the
boat
is 120 m from the foot of the
cliff
,
calculate the height of
the cliff. (WASSCE
)
The angle
of elevation of a tower, 45 m high
from a ball on the ground is 52°.
(a) How far is the ball from the foot of the
tower?
(b) How much further away should the ball
be moved from the foot of the
tower
,
so that the angle of elevation is halved?
From a horiz
observes that the angles
the top and
base of a con
and 33°,
respectively. C
three significant
figures
(a) shortest
distance b
the base
of the co
(b)
height of the con
10 (a)
The triangle AB
AB = 17 m,
BC
Calculate:
(i) the larges
(ii) the area
(b) From a poin
the angle
o
tower RS,
correct
distance
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