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819

Q:

The angle of elevation of the top of a tower from a point A on the ground is 30o. On moving a distance of 20 m towards the foot of the tower to a point B, the angle of elevation increase to 60o.The height of the tower is-

  • 1
    5√3
  • 2
    15
  • 3
    10√3
  • 4
    20√3
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Answer : 3. "10√3"

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