Issue in Chapter 4 with Xcode 13

Hello. Rotation Matrix gives erroneous result. That’s what it gets in the end. Slightly different from the picture in chapter 4.
Screen Shot 2021-11-21 at 12.05.07

Hi @harmansmith

Have you tried comparing your result with the sample final code? This is what I get when I run the final playground in Chapter 4.

Screen Shot 2021-11-22 at 9.19.05 am