Spanish original · English

Hover or tap underlined Spanish terms to see their translation and exam tip.

Para observar la altura de una estrella con el sextante:To observe a star’s altitude with the sextant:

Show the answer

Correct answer: b) Make sure to measure on the star’s vertical circle, rocking the sextant slightly so the reflected star traces an arc tangent to the horizon

Why it is correct

Rocking the sextant, the reflected star traces an arc. Its lowest point, touching the horizon, is the true altitude.

Why the others are not

  • a) Bring it to the horizon.
  • c) Not the general rule.
  • d) Option b is correct.

How to work it out in the exam

  1. Rock: arc touching the horizon.

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.