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A tower is 50m high. Its shadow is x m s...

A tower is 50m high. Its shadow is x m shorter when the sun's altitude is `45^(@)` then when it is `30^(@)`, then x=……….m.

A

105

B

20

C

10

D

100

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BEYOND PUBLICATION-APPLICATIONS OF TRIGNOMETRY-EXERCISE
  1. The given figure shows the observation of point 'C' from point A . The...

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  2. If the length of the shadow of a tower is (1)/(sqrt(3)) times the heig...

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  3. A tower is 50m high. Its shadow is x m shorter when the sun's altitude...

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  4. The length of the string of a kitef flying at 100m above the ground wi...

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  5. A player sitting on the top of a tower of height 40m observes the angl...

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

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  7. If the angle of elevation of a tower from a distance of 100 m from its...

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  8. An object is placed above the observer's horizontal, we call the angle...

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  9. Angle of elevation of the top of a building from a point on the ground...

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  10. What change will be observed in the angle of elevation as we move away...

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  11. An objcet is placed below the observer's horizontal, then what is the ...

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  12. What change will be observed in the angle of elevation as we approach ...

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  13. In the figure given below, the imaginary line through the object and e...

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  14. In the figure given below, a man on the top of cliff observes a boat c...

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  15. If a pole height 6m casts a shadow 2sqrt(3)m long on the ground, then ...

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  16. In the figure given below, if AD = 7 sqrt 3 m, then BC = …………..m.

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  17. The length of the shadow of a tree is 7m high, when the sun's elevatio...

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  18. If two tangents inclined at an angle of 60^(@) are drawn to a circle o...

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  19. The angle formed by the line of sight with horizontal, when the point ...

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  20. cot^2 B-cosec^2 B=………….

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