I'm glad my 'Processing' book finally arrived today so now I can get started with chunk 53 'Using trigonometric functions'. I think this topic is quite exciting and challenging. I like art and I agree with the author: trig functions are central to graphics programming.
I am looking forward to create art with sine, cosine and tangent functions and to make the most of any 'happy coding mistakes' that I am sure it will make this experience worth it!