Trim Curve to Curve

[TuanVA]

Hi Everyone, I’m newbie to Grasshopper
I want to trim to create this line as below screenshot
Thanks for guiding me

[dn.aur (Dan)]

this would be the easiest way:

intersect.gh (7.3 KB)

[leopoldomonzani]

circle.gh (14.1 KB)

[TuanVA]

Thanks a lot guys