19. An aeroplane, wien flying at a height of 4000 m irom the ground passes vertically above anotheraeropiane at an instant when the angles of eluvation of the iwo planes from the same point on theground ate 60 and 45 respectively. Find the vertical distance betveen the aeroplanes at that iristant(lake 3 1.73)| an 6?" Ä°n erms of trio onntnetic ratios of angles between 00 and 452epmetric rafios of augles between)o arZ 10cin 57,

19. An aeroplane, wien flying at a height of 4000 m irom the ground pa

1.	19. An aeroplane, wien flying at a height of 4000 m irom the ground passes vertically above anotheraeropiane at an instant when the angles of eluvation of the iwo planes from the same point on theground ate 60 and 45 respectively. Find the vertical distance betveen the aeroplanes at that iristant(lake 3 1.73)\| an 6?" Ä°n erms of trio onntnetic ratios of angles between 00 and 452epmetric rafios of augles between)o arZ 10cin 57,
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