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RRB Group D 3-Dec-2018 Shift 3 Solved Paper
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© examsnet.com
Question : 11
Total: 100
A vertical pole, 45 m long, Easts a shadow 15 m long on the ground. At the same time, a vertical building casts a shadow 60 m long on the ground. What is the height of the building?
60m
150m
180m
120m
Validate
Solution:
From Δ ABC, angle of elevation is B
tan θ=
A
B
B
C
=
45
15
tan θ= 3
Now, tan θ=
Height
of
the
building
building
show
=
3
Height
of
the
building
60
=
3
∴Height of the building= 60×3= 180 m
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