1. The problem asks about latitude and longitude coordinates and how to work with them. 2. Latitude and longitude are geographic coordinates used to specify locations on Earth's surface. 3. Latitude measures north-south position between the poles, ranging from $-90^\circ$ (South Pole) to $+90^\circ$ (North Pole). 4. Longitude measures east-west position, ranging from $-180^\circ$ to $+180^\circ$, where $0^\circ$ is the Prime Meridian. 5. To calculate distance or navigate using lat/lon, formulas like the haversine formula are used which involve spherical trigonometry. 6. If you have specific lat/lon coordinates and want to find distance or midpoint, use: $$\text{distance} = 2r \arcsin \left( \sqrt{\sin^2\left(\frac{\Delta \phi}{2}\right) + \cos \phi_1 \cos \phi_2 \sin^2\left(\frac{\Delta \lambda}{2}\right)} \right)$$ where $\phi$ is latitude (in radians), $\lambda$ is longitude, and $r$ is Earth's radius. 7. For simple coordinate plotting or conversions, understand that: - Latitude increases northward - Longitude increases eastward This general overview covers how to understand and start working with latitude and longitude coordinates.