Q.




A kite is flying at a height of 60 m above the ground. The string attached to the kite is
temporarily tied to a point on the ground. The inclination of the string with the ground
is 60°. What is the length of the string (assuming that there is no slack in the string)?

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a

50 3  m  

b

40 3  m  

c

60 3  m  

d

30 3  m    

answer is B.

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Detailed Solution

Given that,
Inclination of the string with the ground is 60 o  ,
Height of kite flying above the ground =60 m  .
The diagrammatic representation of the given situation is,
Question Image Question Image
3 2 = 60 AC AC= 60×2 3 AC= 120 3 Multiply and divide by  3 . AC= 120× 3 3 × 3 AC=40 3  m  
So, the length of the string is 40 3  m.  
Therefore, the correct option is 2.
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