How to draw astroid given by Parametric equation $a(t)=(\cos^3(t),\sin^3(t) )$

Question

I wanted to draw Asteroid with parametric equation $a(t)=(\cos^3(t),\sin^3(t) )$

I know that $x^{2/3}+y^{2/3}=1$ is equation . Also $x^2+y^2=1$ is equation of circle. By using online app I had drawn that . But I do not know what is process of drawing by hand .

Any help will be appreciated