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A pole is standing at a point O between ...

A pole is standing at a point O between two milestones at A and B such that the angles of elevation of the top of the pole at A and B are respectively `alpha and beta`. If the distance between the milestones is half the height of the pole then

A

`2 sin (alpha + beta) = sin alpha sin beta`

B

`2 sin (alpha + beta) = cos alpha cos beta`

C

`sin (alpha + beta) = 2 sin alpha sin beta`

D

`sin (alpha + beta) = 2 cos alpha cos beta`

Text Solution

Verified by Experts

The correct Answer is:
A
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