1.

The shadow of a tower standing on a level ground is x metres long when the sun's altitude is 30^(@), while it is y metres long when the altitude is 60^(@). If the height of the tower is 45. (sqrt3)/(3) meters, then x -y is :

Answer»

30 METERS
`45sqrt3` meters
`(45)/(SQRT3)` meters
`45. (sqrt3)/(2)` meters.

Answer :A


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