1.

An observer standing at a point P on the top of a hill near the sea-shore notices that the angle of depression of a ship moving towards the hill in a straight line at a constant speed is 30^(@). After 45 minutes, this angle becomes 45^(@). If T (in minutes) is the total time taken by the ship to move to a point in the sea where the angle of depression from P of the ship is 60^(@), then T is equal to

Answer»

`45(1+(1)/(sqrt(3)))`
`45 (1+sqrt(3))`
`45(1+(2)/(sqrt(3)))`
`45(2+(1)/(sqrt(3)))`

ANSWER :A


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