Proportionally increasing the width of a curved line Good day!
I'm trying to increase the width of the line as it goes, so i want the width to increase propotionally like this:

I tried to rotate it, use proportional editing, but it didn't work well. Also, however, I could do this manually with edge slide and alt, but I'm afraid it would be not so smooth.
Is there's another way to proportionally move the outer line of verticies?
Thanks!
There are many ways to do this, but one that springs to mind is to construct your curve with a Curve modifier deformation, either of a long, thin plane subdivided along its length, or an array of smaller face-planes, merged in the Array modifier.

Then the curve's 'Radius' becomes available for adjustment. With Proprtional Editing, set to 'Connected Only', you can select one end or the other of the curve, with an appropriate falloff profile and size,  AltS scale the radius of the curve progressively from one end to the other.