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Si nos encontramos en el paralelo celeste 40º N ¿Cuánto valdrá el arco de nuestro meridiano celeste, contado desde este paralelo hasta nuestro Polo Depreso?If we are on celestial parallel 40º N, what is the arc of our celestial meridian from this parallel to our depressed pole?

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Correct answer: b) 130º

Why it is correct

40º to the equator, then 90º from the equator to the south pole: 130º.

Why the others are not

  • a) That is near the colatitude, which goes to the other pole.
  • c) Add 90º + 40º.
  • d) Add 90º + 40º.

How to work it out in the exam

  1. To the depressed pole: 90º + latitude.

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.