About Making Line smaller than a particular angle

How can I make line smaller than 30 degrees between many random points

I don’t understand what you mean.
Do you have a sketch?

like capture, making line only under 30 degree of the xy plane

want to extract line within 30degrees.

like that, I connected all of points. But I need only lines from 0 degree~ 30 degree. how to get those line

Hi - I have merged your 3 different threads into this one topic. Please don’t start new threads for the same issue.
If you need help with something, start by posting your Grasshopper file.

okay. Sorry