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Q:

The shadow of a tower when the angle of elevation of the sun is 45 °, is found to be 10 m longer that when it was 60 °. The height of the tower is 

  • 1
    10(√3-1) m
  • 2
    10(√3+1) m
  • 3
    5(√3-1) m
  • 4
    5(3+√3) m
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Answer : 4. "5(3+√3) m "

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