A man observes the elevation of a balloon to be `30^{0}` at a point A. He then walks towards the balloon and at a certai

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Q 3060480315.     A man observes the elevation of a balloon to be `30^{0}` at a point A. He then walks towards the balloon and at a certain place B, find the elevation to be `60^{0}`. He further walks in the direction of the balloon and finds it to be directly over him at a height of `1/2` km, then AB=
A

`\frac{1}{\sqrt{2}}\ km`

B

`\frac{1}{\sqrt{3}}\ km`

C

`\frac{1}{\sqrt{4}}\ km`

D

`\frac{1}{\sqrt{5}}\ km`

HINT


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

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