SOLUTION: Find the exact ratio of the equator to the distance around the Earth at latitude 45° north.

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Question 1128673: Find the exact ratio of the equator to the distance around the Earth at latitude 45° north.
Answer by ikleyn(52855) About Me  (Show Source):
You can put this solution on YOUR website!
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This ratio, OBVIOUSLY, is the same as the ratio of the corresponding radii, which, in turn is equal to  


    cos(45°) = sqrt%282%29%2F2.                      ANSWER