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There are two vertical posts ,one on each side of a road ,just opposite to each other .One post is 108 metre high .From the top of this post , the angle of depression of the top and foot of the other post are `30^(@)and60^(@)` respectively .The height of the other post (in metre ) is

A

36 m

B

72 m

C

108 m

D

110 m

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The correct Answer is:
B
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LUCENT PUBLICATION-HEIGHT AND DISTANCE-EXERCISE-12A
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  2. The angle of elevation of the to of a tower from a point A on the grou...

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  3. There are two vertical posts ,one on each side of a road ,just opposit...

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  4. At the foot of a mountain the elevation of its summit is 45^(@). After...

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  5. From a point on the ground the angle of elevation of top of a house an...

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  6. From a point of the ground, angle of elevation of top of a tower is 30...

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  8. The angle of elevation and depression of top of a statue from a point ...

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  9. A spherical balloon of radius 10 feet is in the open air. If angle of ...

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  10. The angle of the elevation of an aeroplane from a point on the ground ...

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  11. Two stations due south of a leaning tower which leans towards the nort...

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  12. A balloon is slanting down in a straight line passes vertically above ...

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  13. A radio transmitter antenna of height 100 m stands at the top of a tal...

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  14. The angle of elevation of the top of a half constructed tower at a dis...

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  15. The length of the shadow of a person s cm tall when the angle of a ele...

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  16. The shadow of a pole 6 metre high is 15 metre long and at the same tim...

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  17. Suppose the angle of elevation of the top of a tree at a point E due e...

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  18. Two poles of heights 6m and 11 m stand on plane ground. If the distanc...

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  19. The shadow of a tower is 15 m when the Sun's altitude is 30^(@). What ...

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  20. The angles of elevation of the top of a tower from two points situated...

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