A point B on the level ground is x m away from the foot of a h meter tall tower. If the angle of elevation of the top of the tower from the point B is B°, then the height of the tower is ______ m.

x tanB

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x/tanB

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tanB/x

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none of these

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Solution

The correct option is A
x tanB

$tan$ B = $\frac{h}{x}$

$\Rightarrow$ h = x $tan$ B

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