Do you mean like this:
theta = 0 : 360/25 : 360;
x = 5 * sind(theta);
y = 5 * cosd(theta);
plot(x, y, 'b*-', 'LineWidth', 2);
grid on;
hold on;
axis square
% Draw lines from origin to the points in red
for k = 1 : length(y)
plot([0,x(k)], [0, y(k)], 'r-');
end
If you want the angle to turn from one side to head towards the next (x, y) location, that's just simple high school trigonometry that I would think you can handle. Let me know if you can't figure it out.
