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Circumference at the lattitude ¥è

ÀÛ¼ºÀÚ Uploader : ¹Ö±âÀû ÀÛ¼ºÀÏ Upload Date: 2018-08-16º¯°æÀÏ Update Date: 2018-08-17Á¶È¸¼ö View : 857

Circumference at the lattitude ¥è

As shown in the figure, circumference at the lattitude ¥è can be calculated as follows:

Assuming a perfect sphere and letting the radius of the earth and the radius at the lattitude ¥è as R and r respectively:

r = R*cos¥è
Circumference L = 2*¥ð*r = 2*¥ð*R*cos¥è

*** Âü°í¹®Çå[References] ***

L = 2*¥ð*R*cos(¥è)
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