Question

how the latitude and longitude help us?

Answer 1

The number of latitude degrees will be larger the further away from the equator the place is located, all the way up to 90 degrees latitude at the poles. Latitude locations are given as degrees North or degrees South. Vertical mapping lines on Earth are lines of longitude, known as "meridians

Answer 2

it help us to measure time .it is imaginary lines
. by this it forms a box like structure it is knows as Grid . from starting point of grid to its ends almost equal to 4mins. by this we can measure time from one place to another place. ex : in London if time is 6:00 Am in India it's is 12:30 AM . I think u may understand .