Geographical latitude and longitude formula

Geographical latitude and longitude formula:

Longitude less than 20 degrees, all in the Eastern Hemisphere; Longitude greater than 160 degrees, all in the western hemisphere; Longitude is between 20 degrees and 160 degrees, east longitude is in the eastern hemisphere, and west longitude is in the western hemisphere. Judgment of the northern and southern hemispheres: the northern latitude is in the northern hemisphere and the southern latitude is in the southern hemisphere. 20 degrees west longitude, east longitude 160 degrees, the whole line runs through, divided into the eastern and western hemispheres.

On the globe, the great circle composed of points with equal distance to the north and south poles is called the equator, which is about 40 thousand kilometers long. The equator and the circle parallel to the equator are called latitudes, and the length decreases from the equator to the poles. Latitude indicates the east-west direction.

Extended data:

Latitude and longitude are the combination of longitude and latitude to form a coordinate system, which is called geographical coordinate system. It is a spherical coordinate system, which uses the spherical surface of three-dimensional space to define the space on the earth and can mark any position on the earth.

Like the meridian, the latitude is an auxiliary line assumed by human beings for the convenience of measurement. It is defined as the trajectory formed by a certain point on the earth's surface with the rotation of the earth. Any weft is round and parallel to each other.

The length of latitude is the circumference of the equator multiplied by the cosine of latitude, so the longest latitude of the equator, the farther away from the equator, the shorter the circumference, and it will shrink to zero at the poles. 90 degrees from the equator to the north and south are called north latitude and south latitude, which are represented by "n" and "s" respectively. Longitude is divided into east and west, meaning north and south, and latitude is divided into north and south, meaning east and west.