Final answer:
In GPS coordinates, X typically stands for latitude, which is the north-south position relative to the equator, and it is accompanied by longitude to provide precise location coordinates on Earth.
Step-by-step explanation:
In GPS coordinates, the letter X typically represents latitude, which is the position north or south of the equator measured in degrees from 0° to 90°. Longitude, on the other hand, is the position east or west of the prime meridian, running through Greenwich, England, measured from 0° to 180°. The combination of latitude and longitude gives precise coordinates for any location on Earth's surface and is essential for navigation and location-based services like GPS.
When using coordinates in calculations, latitude may be denoted by the Greek letter lambda (λ), but it's commonly referred to as 'X' in some texts or resources. Conversely, longitude is often represented by the Greek letter phi (φ). The two coordinate values are used in the global positioning system (GPS) to help users find their way by providing an accurate location.