Its in earths orbit in space
That is very true , the South American handbook was found in a library
Answer:
This difference exists because of the Earth's slight elipsoid shape.
Explanation:
This difference exists because of the Earth's slight elipsoid shape.
Due to this reason, the measurement of a degree of longitude is given by the following formula.

In which
is the length in degrees at the Equator and La is the latitude(in degrees).