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Prema

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· 1 Months ago

Alternate (Question: 269925.0 )

Required height, h = H(Cotx - 1)

h =150/root3 * (cot30 -1)

Question:

The angle of elevation of the top of an unfinished pillar at a point 150 m from its base is 30º. If the angle of elevation at the same point is to be 45º, then the pillar has to be raised to a height of how many metres?

Options:
A)

59.4 m

B)

61.4 m

C)

62.4 m

D)

63.4 m

Solution:

Ans: (d)

  

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