I know how to do this normally, assuming that up is 0 degrees

```
X += Speed * Math.Cos(angle);

Y += speed * Math.Sin(angle);

```

But I don't know how to do it if I assume that up is actually 270 degrees, and right is 0 degrees. (I am using Game Maker, and they decided to make right be 0 degrees instead of up)

How would I go about doing this? There may be a simple solution I am overlooking, but I am not the brightest when it comes to math.