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From the top of a chiff 30 metres high, ...

From the top of a chiff 30 metres high, the angle of elevation of the top of a tower is found to be equal to the angle of depression of the foot of the tower. The height of the tower is

A

30 mts

B

`15sqrt2 mts`

C

60 mts

D

`30sqrt2 mts`

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Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-HEIGHTS AND DISTANCES-PRACTICE SHEET (EXERCISE HEIGHTS AND DISTANCES) (LEVEL- I (MAIN) SINGLE ANSWER TYPE QUESTIONS)
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  2. A vertical tower stands on a declivity which is inclinde at 15^(@) to ...

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  3. In a prison wall there is a window of 1 metre height, 14 metres from t...

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  4. A flag-staff stands on a tower which is on level ground. The total hei...

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  5. A tower stands at the top a hill whose height is three times the heigh...

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  6. A vertical pole more than 100 ft high consists of two portions the low...

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  7. A straight pole A subtends a right angle at a point B of another pole ...

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  8. A tower, of x metres high, has a flagstaff at its top. The tower and t...

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  9. From the top of a chiff 30 metres high, the angle of elevation of the ...

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  10. From a point E on the horizontal due to east of a tree, the top of the...

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  11. Two pillars of equal height stand at a distance of 100 metres. At a po...

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  12. The angle of elevation of a stationar cloud from a point 2500 m above ...

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  13. The angle of elevation of the top point P of a vertical tower PQ of he...

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  14. The angle of elevation of the top of a tower from the top and botton o...

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  15. The tops of two poles of heights 10 metres and 12 metres are connected...

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  16. A person observes the top of a tower from a point A on the ground. the...

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  17. P is a point on the segment joining the feet of two vertical poles of ...

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  18. If a flag staff of 6 mt high placed on the top of a tower throws a sha...

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  19. The elevation of top of a hill is observed from a certain point in the...

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  20. A tower subtends an angle alpha at a point A on the same level as the ...

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