The shadow of a vertical tower on level...

The shadow of a vertical tower on level of ground increased by 10m when the attitude of the sun change from `45^@`to `30^@`. Find the height of the lower.

A

`10(sqrt3+1)m`

B

`5(sqrt3-1)m`

C

`5(sqrt3+1)m`

D

`10(sqrt3-1)m`

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The correct Answer is:

C

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