Find the length which at a distance of 5280 m will subtend an angle of 1’ at the eye.
Given radius = 5280 m
We know that 
And know that 
= 1.5365 m
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Find the length which at a distance of 5280 m will subtend an angle of 1’ at the eye.
Given radius = 5280 m
We know that
And know that
= 1.5365 m