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n poles standing at equal distances on a...

n poles standing at equal distances on a straight road subtend the same angle `alpha` at a point O on the road. If the height of the largest pole is h and the distance of the foot of the smallest pole from O is a, the distance between two consecutive poles is

A

`(h sin alpha-a cos alpha)/((n-1)sin alpha)`

B

`(h cos alpha-a cos alpha)/((n-1)cos alpha)`

C

`(h cos alpha - a sin alpha)/((n-1)sin alpha)`

D

`(h sin alpha-a cos alpha)/((n-1)cos alpha)`

Text Solution

Verified by Experts

The correct Answer is:
C
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