An observer finds that the angular elevation of a tower is A. On advancing `3 m` towards the tower the elevation is ` 45

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Q 3070834716.     An observer finds that the angular elevation of a tower is A. On advancing `3 m` towards the tower the elevation is ` 45 ^{ \circ }` and on advancing `2 ` m nearer, the elevation is `( 90 ^{ \circ }-A).` The height of the tower is
A

`2 m`

B

`4 m`

C

`6 m`

D

`8 m`

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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