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From the top of a tower h m high, angles...

From the top of a tower h m high, angles of depression of two objects, which are in line with the foot of the tower are `alpha` and `beta(betagtalpha)`. Find the distance between the two objects.

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The correct Answer is:
`h(cot alpha-cot beta)`
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VK GLOBAL PUBLICATION-HEIGHT AND DISTANCE-PROFICIENCY EXERCISE ( SHORT ANSWER QUESTIONS II)
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