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Angle of elevation of the top of a build...

Angle of elevation of the top of a building from a point on the ground is `30^(@)`, Then the angle of depression of this point from the top of the building is…………..

A

`65^@`

B

`60^@`

C

`70^@`

D

`30^@`

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VGS PUBLICATION-BRILLIANT-APPLICATIONS OF TRIGONOMETRY-EXERCISE
  1. The angle of depression from the top of a tower 100m height, at a poin...

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

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

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

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

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

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

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

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

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

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

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  12. cot^2 B-cosec^2 B=………….

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  13. tantheta/sectheta = ..........

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  14. A boy observed the top of an electrical pole to be at angle of elevati...

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  15. Suppose you are shooting an arrow from the top of a building at a heig...

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  16. sin(pi^(c)/2) =

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  17. Domain of sin theta=………….

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  18. tan(pi^(c)/4) =

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  19. cot 15^circ=

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  20. A+B=180^(@) then cosA+cos B=………..

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