How do you type the degree symbol?

Try shift-alt -8 - °. Strictly speaking alt-sero isn't a degree symbol but is used in some romance languages to mean a part (such as 2º part = 2nd part). Note the difference - 2º 2° (the latter is degrees).

alt-k isn't strictly speaking degrees - it's described as 'ring above' though I couldn't place it over a letter, which is what the name suggests. It's rather smaller than the degree sign - 2˚ 2° - the latter is strictly correct and indeed looks better. All this may be different on the OP's Norwegian keyboard - Scandinavian languages don't have the same layout, neither Swedes nor-Wegians.

use 'option,0. Like this 65º

Try shift-alt-Q.

alt-k works. It's not exactly the same symbol but works and i use it.

Wowº Thanks°

ah okay. I looked past the fact that OP has a non-US keyboard layout.