1.

An aeroplane flying at a height of 3000 m above the ground passes vertically another place at an instant when the angle of elevation of the two planes from the same point on the ground are 60^(@) and 45^(@)respectively. The height of the lower plane from the ground is :

Answer»

500 m
1000
`1000 sqrt3m`
`100 (SQRT3 +1)m.`

Answer :C


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