Question

what is the work of latitudes and longitudes ????

Answer 1

longitudes are imaginary lines from north to south pole while latitudes are imaginary line from horizontal component of earth
to know any location these are really helpful as longitude can be said as x axis of earth while latitude can be y
By those X &Y Axis a one can find his/her location easily

Answer 2

latitude and longitude play very important role to know the location of India......
the latitude and Longitude of India are 20'N
and 77'E respectively....
Latitude and Longitude are two imaginary coordinate on India , these line longitude and latitude helps to label every place on the surface.

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