What would be the tri tone of a minor scale? Is it still an aug4/b5? Or does it change to something else?
nope. tritone is still A4/d5 in a minor scale.
What was the reason you were doubting about the tritone interval in a minor scale, if i may ask.
Correcto! A tritone will always be an A4/b5, or three whole steps apart. In the natural minor scale it falls between scale degree 2 and b6 (a diminished fifth), or inversely between scale degree b6 and 2 (an augmented 4th)
It's a A4 or d5 - Most usually it's referred by a b5.