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If the angles of elevation of the top of a tower from three collinear points A,B and C, on a line leading to the foot of the tower, are `30^(@), 45^(@) and 60^(@)` respectively, then the ratio, AB : BC, is

A

`sqrt3: 1`

B

`sqrt3 : sqrt2`

C

`1: sqrt3`

D

` " 2 : 3 "`

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AAKASH SERIES-HEIGHTS AND DISTANCES-LECTURE SHEET (EXERCISE - II ) (LEVEL- I (MAIN) SINGLE ANSWER TYPE QUESTIONS)
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