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The angle of elevation of the top point ...

The angle of elevation of the top point P of a vertical tower PQ of height 'h' from a point 'A' is `30^(@) " and from a B is " 45^(@)`, where B is the point at a distance 40 metersfrom the point 'A' measured along the line AB which makes an angle `15^(@)` with AQ. Height of the tower is

A

`10(sqrt6-sqrt2) mts`

B

`10(sqrt6+sqrt2) mts`

C

`10sqrt6 mts`

D

`20(sqrt6+sqrt2) mts`

Text Solution

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The correct Answer is:
B
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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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  5. A tower stands at the top a hill whose height is three times the heigh...

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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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