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The top of a 15 metre high tower makes an angle of elevation of `60o` with the bottom of an electric pole and angle of elevation of `30o` with the top of the pole. What is the height of the electric pole? (a) 5 metres (b) 8 metres (c) 10 metres (d) 12 metres (e) None of these

A

5 metres

B

8 metres

C

10 metres

D

12 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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  3. The top of a 15 metre high tower makes an angle of elevation of 60o...

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  6. A tree is broken by wind, its upper part touches the ground at a point...

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  7. A man standing on the bank of a river observes that the angle subte...

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  8. From the top of a lighthouse, 100 m high, the angle of depression of ...

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  9. If the height of a pole is 2sqrt(3) metres and the length of its sh...

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  10. A 30 metres long ladder is placed against a wall 15 m high such that i...

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

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

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  13. From the top of the cliff 150 m high, the angles of depression of the ...

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

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  15. A man on the top of a tower, standing on the seashore, finds that a...

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  16. A tower subtends an angle alpha at a point A in the plane of its base ...

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  17. A flag staff of 5m high stands on a building of 25m high. At an obse...

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

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

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

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