what are latitude and longitude coordinates used for

Navigation

Latitude is how many degrees you are above (north) or below(south) the equator.
Longitude is how many degrees you are east or west of Greenwich England

For example I am at about 42 degrees, 40 minutes North latitude

and
70 degrees, 40 minutes West longitude

(Lanes Cove, Gloucester, Massachusetts)

Latitude and longitude coordinates are used to find exact locations.

They are like house and apartment addresses -- but used where house or apartment addresses aren't applicable.

Check this map to find the exact coordinates of any place on earth.

http://itouchmap.com/latlong.html

It would take me quite a while to explain how to use a sextant and exact time to determine latitude and longitude but perhaps that is not part of the question?

Latitude and longitude coordinates are used to pinpoint locations on the Earth's surface. Latitude measures the distance north or south of the equator, while longitude measures the distance east or west of the prime meridian.

These coordinates are commonly used in various applications:

1. Navigation: Latitude and longitude are essential for navigation systems, such as GPS (Global Positioning System). By knowing your coordinates, you can determine your position and navigate from one location to another.

2. Mapping and Cartography: Latitude and longitude provide the foundation for creating maps and charts. They help in accurately depicting the Earth's surface and placing landmarks, cities, and natural features in the correct positions.

3. Geocoding: Latitude and longitude are used for geocoding, the process of converting addresses or place names into specific coordinates. Geocoding allows mapping applications to determine the precise location of a point on the Earth's surface.

4. Weather Forecasting: Meteorologists use latitude and longitude to track and predict weather patterns accurately. By monitoring changes in coordinates over time, they can analyze how weather systems move and develop.

5. Emergency Services: In emergency situations, knowing the latitude and longitude coordinates of a particular location can enable first responders to locate and assist individuals in need quickly.

To determine latitude and longitude coordinates:

- Latitude: It can be obtained using various methods, such as GPS devices, mobile apps, or online mapping services. Alternatively, you can refer to maps or atlases that display latitude lines (also called parallels) spaced at regular intervals.

- Longitude: Similarly, longitude can be obtained using GPS devices, mobile apps, or online mapping services. Maps or atlases also display longitude lines (known as meridians) spaced at regular intervals. The prime meridian, located at 0 degrees longitude, passes through Greenwich, London, and is used as a reference point for measuring east and west.

By combining latitude and longitude coordinates, you can precisely identify any location on Earth's surface.