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72^(@)=……………....

`72^(@)`=…………….

A

`(pi^e)/(2)`

B

`(pi^e)/(3)`

C

`(2pi^e)/(5)`

D

`(pi^e)/(5)`

Text Solution

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The correct Answer is:
C
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VGS PUBLICATION-BRILLIANT-APPLICATIONS OF TRIGONOMETRY-MODEL EXAMINATION
  1. (1)/(cos theta)-cos theta=………….

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  2. sin theta=cos theta,theta in Q1 then theta-

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  3. 72^(@)=…………….

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  4. sin^2""105^(@)+cos^2""105^(@)=…………..

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  5. sin 45^(@)(cos 45^(@))=…………..

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  6. cos 40^(@)=0.76 then sin 50^(@)=………….

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  7. At a point 15m away form the base of a 15m high pole, the angle of ele...

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  8. The length of shadow of a pole is equal to the length of the pole, the...

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  9. The angle of elevation of top of a tree is 30^(@). On moving 20m neare...

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  10. The ratio of length of a pole and its shadow is 1:sqrt(3). The angle ...

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  11. The upper part of a tree is broken by wind and makes an angle of 30^(@...

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  12. From a bridge 25m high, the angle of depression of a boat is 45^(@). F...

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  13. A tower makes an angle of elevation equal to the angle of depression f...

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  14. When the angle of elevation of a pole is 45^(@), the length of the pol...

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  15. In a rectangle, if the angle between a diagonal and a side is 30^(@), ...

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  16. Two posts are 15 m and 25m high and the line joining their tope make a...

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  17. An electric pole 20m high stands up right on the ground with the help ...

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  18. A building casts a shadow of length 50sqrt(3) m when the sun is 30^(@)...

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  19. When the angle of elevation of a light changes from 30^(@)" to "45^(@)...

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  20. From the top of a building 50m from horizontal, the angle of depressi...

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