If you're wondering how I got that, I encourage you to review the unit circle and some of the standard angles around the unit circle. You'll see that in the trigonometry section of Khan Academy. But this is enough for us because the sine is the y coordinate. It's the y coordinate here. So negative square root of two over two. This is negative square root of two over two. And then the cosine is the x coordinate, which is also negative square root of two over two, but it's gonna be that squared.