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A boy is standing on the ground and flying a kite with 100m of string at an elevation of `30o` . Another boy is standing on the roof of a 10 m high building and is flying his kite at an elevation of `45o` . Both the boys are on opposite sides of both the kites. Find the length of the string that the second boy must have so that the two kites meet.

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The correct Answer is:
`40sqrt2` m
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DISHA PUBLICATION-TRIGONOMETRY AND ITS APPLICATIONS-Practice Exercise (Foundation Level)
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  7. If x=psectheta and y=qtantheta then

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  8. If btantheta=a, the value of (asintheta-bcostheta)/(asintheta+bcosthet...

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  9. If tantheta+sintheta=m and tan theta-sin theta=n, then find the value ...

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  12. If the angle of depression of an object from a 75 m high tower is 30^@...

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  13. The angle of elevation of the top of a tower at a point G on the groun...

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  18. The angles of elevation of the top of a tower from two points at dista...

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