how to make a polar plot from 0 to 2 pi

I'm trying to make a polar plot from 0 to 2pi but I don't know how to code that properly.

Answer 1

[KSSV]

theta = 0:0.01:2*pi;
rho = sin(2*theta).*cos(2*theta);
polarplot(theta,rho)

Read it here: https://in.mathworks.com/help/matlab/ref/polarplot.html