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The angle of elevation of the top of a t...

The angle of elevation of the top of a tower standing on a harzontal plane from the two points lying on a line passing through the foot of the tower at distances a and b respectively are complementary angles. If the line joining the two points sutends an angle `theta` at the top of the tower, then `sintheta` is

A

`(a+b)/(a-b)`

B

`(a-b)/(a+b)`

C

`(a-b)/(a+b)`

D

`a/b`

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)
  1. The angles of elevation of a tower from two points which are at distan...

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  2. At a certain point the angle of elevation of a tower is found to be co...

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  3. The angle of elevation of the top of a tower standing on a harzontal p...

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  4. A person stading on the bank of a river observerves that the angle of ...

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  5. From the top of a hill h metre high, the angles of depressions of the ...

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  6. A chimney leans towards north. At equal distance due north and south o...

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  7. A tower subtends angles alpha,2 alpha, 3 alpha respectively at points ...

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  8. A vertical tower stands on a declivity which is inclinde at 15^(@) to ...

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

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

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

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

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

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

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

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

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

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

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

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

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