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  1. The angle of elevation of a tower from a distance 100 m from its foot is 30°. Height of the tower is :
    1. 100
      		m
      √3
    2. 50 √3 m
    3. 200
      		m
      √3
    4. 100 √3 m
Correct Option: A


AB = Tower = h metre
∠ACB = 30°;
BC = 100 metre

∴ tan30° =
AB
BC

⇒
1
=
h
√3100

⇒ h =
100
metre
√3


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