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The angles of elevation of the top of...

The angles of elevation of the top of a rock from the top and foot of a 100 m high tower are respectively `30o` and `45o` . Find the height of the rock.

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RD SHARMA-SOME APPLICATIONS OF TRIGONOMETRY-All Questions
  1. From the top of a building A B , 60 m high, the angles of depres...

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  2. A straight highway leads to the foot of a tower of height 50 m. Fro...

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  3. The angles of elevation of the top of a rock from the top and foot ...

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  4. As observed from the top of a 150 m tall light house, the angles of...

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  5. A flag-staff stands on the top of a 5 m high tower. From a point on...

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  7. The angles of depression of two ships from the top of a light house...

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  8. The horizontal distance between two poles is 15m. The angle of depr...

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  9. Two ships are there in the sea on either side of a light house in s...

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  10. The angle of elevation of the top of a chimney from the top of a to...

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  12. The height of a tower is 10 m. What is the length of its shadow whe...

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  13. If the ratio of height of a tower and the length of its shadow on the ...

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  14. What is the angle of elevation of the Sun when the length of the sh...

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  15. From a point on the ground, 20m away from the foot of a vertical to...

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  16. If the angles of elevation of the top of a tower from two points at...

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  17. In Fig. 12.58, what are the angles of depression from the observing...

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  18. The tops of two towers of height x and y , standing on level gro...

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  19. The angle of elevation of the top of a tower at a point on the grou...

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  20. The ratio of the length of a rod and its shadow is 1\ :sqrt(3) . The...

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