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A boy of height 1.7m is standing 30m away from a flagstaff on the same level ground.He observes that the angle of elevation of the top of the flagstaff is 30 degrees.Calculate the height of the flagstaff.

Asked by 27th February 2013, 3:21 PM
Answered by Expert
Draw a figure such that AB represents the height of the flagstaff, CD represents the height of the boy. 
Then, as given in the question, CD = 1.7 m, BD = 30m. Draw a line CE parallel to BD intersecting AB at point E. 
Answered by Expert 27th February 2013, 8:38 PM
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