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Circumference at the lattitude θ

작성자 Uploader : 밍기적 작성일 Upload Date: 2018-08-16변경일 Update Date: 2018-08-17조회수 View : 691

Circumference at the lattitude θ

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

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

r = R*cosθ
Circumference L = 2*π*r = 2*π*R*cosθ

*** 참고문헌[References] ***

L = 2*π*R*cos(θ)
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