how place on earth may be located using coordinate system
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by using coordinate geometry you can find the position of a place in earth by using the pictures taken by satellites.
Every point on earth has both a latitude coordinate and a longitude coordinate. That's how you tell people where the point is, even if they're not there.
They project the surface of a sphere (the Earth) using a projection. Often the latitudes and longitudes are mapped onto the coordinate plane for small area but such projections distort shapes when mapping larger areas.
To locate points on the Earth's surface, we can use either rectangular coordinate system or geographic coordinate system.4digit or 6 digit reference systems are under rectangular ( projected) system.Their difference lies in assigning Easting and Northing. 4 digit RS uses 2 Easting numbers and 2Northing numbers to show the location of points where as 6 digit uses 3 Easting and 3 Northing numbers. If there is any Hesitation please Well come.
On a map that shows only a small part of the Earth's surface, the coordinate gridlooks like Cartesian " X and Y " coordinates. But as the map shows more and moreof the Earth, it starts to become apparent that the "lines" of latitude and longitudeactually represent polar coordinates on a sphere of constant radius.On a map that's sufficiently accurate, your first clue is this: Carefully measure thedistance between two of the 'vertical' lines, at the bottom of the map, and thenmeasure the distance between the same two lines at the top of the map. The twomeasurements are slightly different, because on a map of the full Earth, the 'vertical'lines all meet, at the north and south poles.