Find the distance from the eye at which a coin of 2cm diameter should be held so as to conceal the full moon wide angular diameter is 31'
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Step-by-step explanation:
Suppose the coin is kept at a distance r from the eye to hide the moon completely.
Let E be the eye of the observer and let AB be the diameter of the coin.
then arcAPB= diameter AB=2.2cm
Now θ=30
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please refer to the attached file for study
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