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The angle of elevation of an object from...

The angle of elevation of an object from a point P on the level ground is a. Moving d metres on the ground towards the object, the angle of elevation is found to be `beta`. Then the height (in metres) of the object is

A

`d tan alpha`

B

`d cot beta`

C

`(d)/(cot alpha+ cot beta)`

D

`(d)/(cot alpha - cot beta)`

Text Solution

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The correct Answer is:
D
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