Creating a tangent circle in graphing.

[webmasterpdx]

I was curious how to do it so I tried it....here is how you'd do it.
Use the geometry app.
Create first funciton, GA, to be a point(1<angle>(pi/4))
Create second point, GB, to be point(0,0)
Then, create a line between them, GB, line(GA,GB)
....and there is your line at an angle of pi/4.

BTW, the best place to find stuff is the wiki...
http://www.wiki4hp.com/doku.php?id=prime:start