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A boy standing on the ground finds a bir...

A boy standing on the ground finds a bird flying at a distance of 100 m from him at an elevation of `30^@`. A girl standing on the root of 20m high building finds of angle of elevation of the same bird to `45^@`. The boy and the girl are on opposite sides of the bird. Find the distance of the bird from the girl, correct to nearest cm.

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PATHFINDER-SOLUTION OF TRIANGLE AND HEIGHT AND DISTANCE-QUESTION BANK
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