Multiple choice question V — task. Mathematics State Board, Class 10.

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The angle of elevation of a cloud from a point '

$h$ ' meters above a lake is

$\beta$ . The angle of depression of its reflection in the lake is

$45^\circ$ . The height of location of the cloud from the lake is:

$h \left(\frac{1 - \tan \beta}{1 + \tan \beta} \right)$
$h \left(\frac{1 + \tan \beta}{1 - \tan \beta} \right)$
$h \tan (45^\circ - \beta)$
none of these

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