Answer:
Increase
Step-by-step explanation:
As the latitude increases, the angle at which the Sun light falls on the Earth changes. This is known as the Sun angle. Although the rays fall on the Earth parallely but they make different angles with objects at different latitudes due to Earth's curvature.
We know that the throughout the year the Sun moves in the sky and changes its altitude but it never gets overhead for a latitude above or below the tropics. Due to this phenomenon, the Sun angle doesn't vary much for tropical region whereas it varies a lot for the region beyond tropics. If the Sun angle varies too much the contrast between the seasonal temperature also increases.
For example: the Sun angle for equator lies in the range of 0° - 23.5° while at the arctic circle (66.5° N) the range is 43° - 90°.