The length of daylight and nighttime are of equal length on an equinox because the center of the sun spends a roughly equal amount of time above and below the horizon at every location on the Earth.
It depends on what you're asking. If angle a and b are both on a straight line, b would equal 169 degrees because the total has to add up to 180 degrees, but if they are on a right angle, b would equal 79 because it has to add up to 90 degrees.
Answer:
In nort Italy the pace of life is more immediate, the cities are more cosmopolitan, and tourism is rife. South Italy is much more relaxed, and the investment in tourism infrastructure is less.
