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Angle of elevation and depression...

Angle of elevation and depression

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`90^(@)`

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The correct Answer is:
A
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The angles of elevation oand depression of the top and bottom of a lighthouse from the top of a building, 60 m high, are 30^(@) and 60^(@) respectively. Find (i) the difference between the heights of the lighthouse and the building. (ii) distance between the lighthouse and the building.

Explain the angle of elevation & depression with the help of diagram.

MCGROW HILL PUBLICATION-HEIGHTS AND DISTANCES -MULTIPLE CHOICE QUESTIONS
  1. Angle of elevation and depression

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  2. From a point P on a level ground, the angle of elevation of the ...

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  3. The angle of elevation of a ladder leaning against a wall is 60o an...

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  4. An observer 1.6 m tall is 20sqrt(3) m away from a tower. The angle ...

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  5. Two ships are sailing in the sea on the two sides of a lighthouse. ...

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  6. A man standing at a point P is watching the top of a tower, whic...

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  7. The angle of elevation of the top of a tower from a certain point i...

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  8. A man is watching from the top of a tower a boat speeding away from...

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  9. On the same side of a tower, two objects are located. When observed...

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  10. A man on the top of a vertical tower observes a car moving at a unifor...

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

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  12. The angle of elevation of the top of an incomplete vertical pillar at ...

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  13. If a flag-staff of 6 m height placed on the top of a tower throws a sh...

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

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

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

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

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

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

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

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