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Heights and Distances Practice Test 2
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© examsnet.com
Question : 8
Total: 24
The angles of elevation of top and bottom ofa flag kept on a flag post from 20 m distanceare 60° and 45° respectively. What is theheight of the flag?
20
(
√
3
−
1
)
m
10
(
√
3
−
1
)
m
15
(
√
3
−
1
)
m
All of the above
None of these
Validate
Solution:
👈: Video Solution
In ΔACD,
A
C
C
D
=
tan
60
°
A
C
20
=
√
3
A
C
=
20
√
3
m
In ΔBCD,
B
C
C
D
=
tan
45
°
B
C
20
=
1
B
C
=
20
m
Length of the flag = AC - BC
=
20
√
3
−
20
=
20
(
√
3
−
1
)
m
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