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GPS coordinates are a unique identifier of a precise geographic location on the earth, usually expressed in alphanumeric characters. Coordinates, in this context, are points of intersection in a grid system. GPS (global positioning system) coordinates are usually expressed as the combination of latitude and longitude.
https://www.youtube.com/watch?v=ALN7gXF1thY
When outlining the coordinates of a location, the line of latitude is always given first followed by the line of longitude. Therefore, the coordinates of this location will be: 10°N latitude, 70°W longitude. The line of latitude is read as 41 degrees (41°), 24 minutes (24′), 12.2 seconds (12.2”) north.
Handy tip: when giving a co-ordinate, latitude (north or south) always precedes longitude (east or west). Latitude and longitude are divided in degrees (°), minutes (‘) and seconds (“).
Coordinates are written as two numbers, separated by a comma and contained within round brackets. For example, Coordinates are written alphabetically – so x comes before y (x, y). One way to remember is ‘you go along the hallway before you go up the stairs’.
Each point can be identified by an ordered pair of numbers; that is, a number on the x-axis called an x-coordinate, and a number on the y-axis called a y-coordinate. Ordered pairs are written in parentheses (x-coordinate, y-coordinate). The origin is located at (0,0).
https://www.youtube.com/watch?v=EV5czkg4i7s
In the polar coordinate system, the ordered pair will now be (r, θ). The ordered pair specifies a point’s location based on the value of r and the angle, θ, from the polar axis. The value of r can be positive, negative, or zero. The sign of r is very important in locating the exact position of the point.
https://www.youtube.com/watch?v=2yOX7soSPeQ
A GPS provides latitude-longitude coordinates gathered by the hardware on a device which communicates with a satellite such as a car navigating system, a mobile phone or a fitness tracker. The latitude/longitude coordinates generated by the GPS are considered the standard for location data.
When writing latitude and longitude, write latitude first, followed by a comma, and then longitude. For example, the above lines of latitude and longitude would be written as “15°N, 30°E.”
I think the reason is: Accurate measurement of latitude came first as it was based on astronomical measurements. Longitude was not accurately measurable until a highly accurate time measuring device was developed.
https://www.youtube.com/watch?v=IxEQwef68Fk
Decimal degrees (DD) express latitude and longitude geographic coordinates as decimal fractions of a degree. … Decimal degrees are an alternative to using sexagesimal degrees (degrees, minutes, and seconds – DMS). As with latitude and longitude, the values are bounded by ±90° and ±180° respectively.
Decimal degrees (DD) express latitude and longitude geographic coordinates as decimal fractions and are used in many Geographic Information Systems (GIS), web mapping applications such as Google Maps, and GPS devices. … As with latitude and longitude, the values are bounded by ±90° and ±180° each.
When writing latitude and longitude, write latitude first, followed by a comma, and then longitude. For example, the above lines of latitude and longitude would be written as “15°N, 30°E.”
https://www.youtube.com/watch?v=-dX3TmSQnmI
https://www.youtube.com/watch?v=YPcy0UWasG8
https://www.youtube.com/watch?v=c9WVU34MY5Q
https://www.youtube.com/watch?v=E5lCvitzOaI
https://www.youtube.com/watch?v=sya3RYN71aY
To plot a point in the polar coordinate system, start with the angle. If the angle is positive, then measure the angle from the polar axis in a counterclockwise direction. If it is negative, then measure it clockwise. If the value of r is positive, move that distance along the terminal ray of the angle.
The Greek letter θ (theta) is often used to denote an angle, and a polar coordinate is conventionally referred to as (r, θ) instead of (x, y). Thus, when dealing with polar coordinates, we’ll now use “theta” as the preferred variable name for the angle.