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The angular elevation of a tower OP at a...

The angular elevation of a tower OP at a point A due south of it is `60^@` and at a point B due west of A, the elevation is `30^@`. If AB=3m, the height of the tower is

A

`2 sqrt3 km `

B

`2sqrt6km,`

C

`(3sqrt3)/(2) km `

D

`(3sqrt6)/(4) km`

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The correct Answer is:
D
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