Tangent Tangent Radius

So I have two planer curves and am looking to create a circle that is tangent to both at a specific radius. In Rhino I would just use the Circle- Tangent, Tangent, Radius tool, but I struggling to replicate that in grasshopper. What would be the best route to replicate it?

I see in grasshopper there is a circle-tangent, tangent, point. I assume the method would be to find the point where the distance between the two lines in the specified radius I need. Or is there an easier way?

This is so far I can do for you


Use math to find the center point

tang_radius.gh (10.0 KB)