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0 sin c cos c

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Paris :

latitude ϕo = 48o50′11.2”longitude λo = 2o20′13.8” Moscou :

latitude ϕ1 = 55o45′39.4”longitude λ1 = 37o39′53.1”

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Brest :

colatitude θo = 42o

longitude λo = −4o

Venezuela :

colatitude θ1 = 75o

longitude λ1 = −60o

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