TI-89 Calculator Help

d.tran103

Hey, I'm having trouble graphing polar equations in my TI-89. I just bought it and still don't understand how it works. For example I have r = 5 + 5 sin(theta). It's suppose to look like a upside apple thing (kind of). But I don't know how to get the graph to show up. I know I'm doing something wrong with my mode. Here is what my mode is set to:

Graph - Polar
Current Folder - Main
Display Digits - Float G
Angle - Degree
Exponential Format - Normal
Complex Format - Rectangular
Vector Format - Rectangular
Pretty Print - Off

Can someone tell me what I'm doing wrong? Thanks!

Omega_Prime

Ok, off the bat I'd recommend setting the "angle" to "Radian" for polar mode. Got the same settings on mine pretty much otherwise.