How to store data

I am trying to store data for variables x, y, r and theta but am not sure how to do it. Any help would be greatly appreciated

angle = pi;
D = 0.05;

while angle < 2*pi
        
    angle = angle + pi/100;
    x = (D/2)*cos(angle);
    y = (D/2)*sin(angle);
    r = (x^2+y^2)^0.5;
    theta = atan(y/x);
end

Answer 1

[madhan ravi]

dp = pi/100;
Angle = pi : dp : (2*pi - dp);
D = 0.05;
x = (D/2) * cos(Angle);
y = (D/2) * sin(Angle);
r = sqrt(x .^ 2 + y .^ 2);
theta = atan(y ./ x);