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A pole stands vertically on a road, whic...

A pole stands vertically on a road, which goes in the north-south direction. P, Q are two points towards the north of the pole, such that PQ = b, and the angles ofelevation ofthe top ofthe pole at P, Q are a, B respectively. Then the height of the pole is:

A

`b/(tan beta +tan alpha)`

B

`b /(cot beta - cot alpha)`

C

`b /(tan beta - tan alpha)`

D

`(b tan alpha)/(tan beta)`

Text Solution

Verified by Experts

The correct Answer is:
B
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