Distance of Earth-Sun

[Igor]

It’s the same formula!
Because:

rToa = (PILd^2)/(ESUNcos(theta));
L = (rToaESUNcos(theta))/(PId^2);
U=1/d^2;
d^2 = 1/U;
L = (rToaESUNcos(theta))/(PI/U);
L = (UrToaESUN*cos(theta))/PI;