How do I make a Christmas wreath on my TI graphing calculator?

Question

I'm pretty sure you have to be in polar mode, but I forgot...

Answer 1

You are right. Polar coordinates are the way to go. Try this:
r = cos(4θ)

The larger the number in from of θ, the more loops you get.

If you want it bigger try:
r = 2cos(4θ)

For an interesting effect with big and little loops try:
r = 1 + 2cos(6θ)

I think you get the idea. By the way, you could just as easily use sin and cos, but the orientation will be slightly different. Decide which one looks better to you.

Answer 2

can you?