Try doing past Prelim papers first if you are doing past papers. The HSC papers would include a lot of content you haven't studied yet. Try the Standard prelim papers from here.
https://www.westmaths.com.au/home/
The itute solutions for the Standard 2 paper are here. I have notified the website owner of one error, which should be rectified in the next day.
The file is now edited.
https://www.itute.com/wp-content/uploads/2024-NSW-ESA-Mathematics-Standard-2-Solutions.pdf
Itute Extension 2 solutions are posted now. The other papers will come shortly.
https://www.itute.com/2024/10/28/free-download-2024-nsw-esa-mathematics-extension-2-solutions/
I think that the author of the itute solutions is saying that the ray in the 3rd quadrant could rotate within the 3rd quadrant, depending on the position of z/w. So if arg(z/w) is very close to pi/2, then the resultant ray could be very close to the negative y axis.