Narayan, standing in the midst of a field, observes a flying bird in his north at an angle of elevation of `30^@` and aft er 21 minutes he observes the bird in his south at an angle of elevation of `60^@`. If the bird flies in a s traight line all a height of `50sqrt3` metres, then find its speed in metre per minuts.

Narayan, standing in the midst of a field, observes a flying bird in h

1.	Narayan, standing in the midst of a field, observes a flying bird in his north at an angle of elevation of `30^@` and aft er 21 minutes he observes the bird in his south at an angle of elevation of `60^@`. If the bird flies in a s traight line all a height of `50sqrt3` metres, then find its speed in metre per minuts.
Answer» 100 metres per minute

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