a bird was flying in a parallel to d ground from at a height of 2000 metres.tom,standing in the middle of the field ,he observed the bird making an angle of elevation 30 degree. after 3 min , he again observed it with an angle of elevation of 45 degree. find the speed of d bird in kms per hr? plz fst it's urgent +1
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Speed of bird is 9.76 kilometres per hour.
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