## Learn creative coding writing simple programs

### 67. Circular motion: sine and her cousin.

We have previously used sin() to generate numbers that continuosly slide between -1 and 1, but we did not study what sin() represented. This time we do that. We have a look at sine and cosine, two similar functions that help us create a circular motion. You can play with the sine/cosine tool at http://bit.ly/sine_cosine I hope it helps you understand sine and cosine.

### Code editor

You can make changes to the code below. Then

**Reference**

background

colorMode

cos

draw

float

height

if

line

map

setup

sin

size

smooth

stroke

strokeWeight

void

width

Questions and comments are welcome! :)
But please try to stay close to the topic of this episode. Use the Processing forums for help with your Processing
projects (or hire me for help ;-)