¦^review

Construct this pattern

> restart:

> x:=cos(t);

x := cos(t)

> y:=sin(t);

y := sin(t)

> m:=[x+t*sin(s), y+t*cos(s), s=-Pi..Pi];

m := [cos(t)+t*sin(s), sin(t)+t*cos(s), s = -Pi .. ...

> t:=n*Pi/20;

t := 1/20*n*Pi

> w:=evalf(m):

> plot([w$n=1..100],color=red,axes=none,scaling=constrained);

[Maple Plot]

maple