You are in a ship and you make the following observations: the north star is 65o above the horizon, and the local time is 5 hours ahead of GMT (Greenwich Mean Time). What is your position

Respuesta :

According to the directions, the location I am at is 65o N, 75o E.

How to calculate my location?

To know our location we must take into account the information we have, which is:

  • The pole star is 65° above the horizon.
  • Local time is 5 hours ahead of GMT (Greenwich Mean Time).

According to the above, the easiest thing to know is the longitudinal location with respect to the Greenwich meridian, so if we are 5 hours ahead of the reference time we can establish that we are at 75° E.

On the other hand, taking the polar star as a reference, the latitudinal location can be established. Keep in mind that the polar star is only visible in the northern hemisphere, so we would be in this hemisphere.

On the other hand, the way to know how far north we are is by calculating the degrees between the horizon and the star, that will tell us what latitudinal location we are at. So if the star is at 65°, we may be close to 65° north latitude.

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