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77.A boy standing on horizon plane finds a bird flying at distance of 100m from him at an elevation of 30 degree .A girl standing on roof of 20 m high building, finds the angle of elevation of same bird to be 45 degree . Both boy and girl are on opposite sides of bird . Find distance vetween boy and girl |
| Answer» 77.A boy standing on horizon plane finds a bird flying at distance of 100m from him at an elevation of 30 degree .A girl standing on roof of 20 m high building, finds the angle of elevation of same bird to be 45 degree . Both boy and girl are on opposite sides of bird . Find distance vetween boy and girl | |