The plot, using "spacecurve"

> spacecurve([sin(t),sin(2*t),sin(3*t)],t=0..2*Pi,thickness=3,scaling=constrained,axes=frame,labels=['x','y','z'],orientation=[65,80]);

It may be a little hard to visualize this in 3 dimensions, so let's also plot a "tubeplot" of the same function.

>