360 degrees. From Greenwich (London) 180 degrees west and 180 degrees east.
There are 180 degrees of latitude between 45 and 40 degrees east longitude. However, if you meant how many degrees of longitude are there, there are 5 degrees of longitude between 45 and 40 degrees east longitude.
360 total, 180 degrees west of prime meridian, and 180 degrees east. There are 180 degrees of latitude, 90 degrees north of the equator, and 90 degrees south.
The equator is a latitude reference, not a longitude reference. There is some point on the equator with every possible longitude. The reference for longitude is the Prime Meridian. Longitudes are measured east of it up to 180°, and west of it up to 180°.
The equator is 90 degrees of latitude from both poles.
Zero degrees
The south pole is 90 degrees south of the equator. The north pole is 90 degrees north of the equator.
Between the north pole and the equator, the 140 East meridian crosses territory in Russia and Japan. South of the equator, the same meridian crosses, Indonesia, Australia, and Antarctica.
23.5
The Equator is the latitude line with a given value of 0-degrees. There Equator runs completely around the Earth. There are 360-longitude lines that intersect the Equator.
66.5 degrees
0 Degrees