> In fact, if I'm totally honest, I'm not 100% I completely understand the sine function now. I've found this .gif does wonders for explaining sine and cosine

> In fact, if I'm totally honest, I'm not 100% I completely understand the sine function now. I've found this .gif does wonders for explaining sine and cosine to people: http://www.butlercc.edu/mathematics/math_courses/ma140/SineCosine.gif http://www.butlercc.edu/mathematics/math_courses/ma140/SineC... Sine is horizontal, cosine is vertical.