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The angle of elevation of the top of an ...

The angle of elevation of the top of an incomplete vertical pillar at a horizontal distance of 100 m from its base is `45^(@)`. If the angle of elevation of the top of the complete pillar at the same point is to be `60^(@)`, then the height of the incomplete pillar is to be increased by

A

`50sqrt(2)` metres

B

100 metres

C

`100(sqrt(3)-1)` metres

D

`100(sqrt(3)+1)` metres

Text Solution

Verified by Experts

The correct Answer is:
C
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MCGROW HILL PUBLICATION-HEIGHTS AND DISTANCES -MULTIPLE CHOICE QUESTIONS
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  9. A 30 metres long ladder is placed against a wall 15 m high such that i...

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  10. If the angles of elevation of the top of a tower from two points dista...

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  11. Length of the shadow of a person is x when the angle of elevation of t...

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  13. The upper part of a tree, broken by the wind makes an angle of 60° wit...

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  17. An aeroplane flying at a height 300 metre above the ground passes vert...

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  18. At a point on level ground, the angle of elevation of a vertical to...

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  19. The straight roads intersect at an angle of 60°. A bus on one road is ...

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