Surveying
The latitude of the observer's position, is

Elevation of the elevated pole
All listed here
Angular distance along the observer's meridian between equator and the observer
Declination of the observer's zenith

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Surveying
Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.

All of these
By adding their longitudes if places are in the different hemispheres
By subtracting their longitudes if places are in the same hemisphere
By subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres

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