Graphing Spherical Coordinates in GeoGebra 3D (Part 1): A Sphere

We use the surface command with parameters for theta and phi (I use t and v). After getting the graph to work we then create sliders for the upper bounds of the parameters and play around with it a bit. Playing around with this kind of thing on GeoGebra is the best way I've found to really learn what's going on.

[timomenz]

Awesome video! Can you please show how to calculate the surface area of the sphere. (not 4(pi)r^2, I want to calculate it when the sphere is cut)

[Bilbo]

jogo has to do this in head head every time he expands his domain btw