There is an incorrect formula in the Texture Resolution lecture. When Michael from the future explains the difference between radians and degrees, the new formula is slightly (but importantly) wrong.
1 radian = 57 degrees. This means the formula to calculate the resolution in degrees should have been this:
dTexture = 57 * 3266 * tan(size/distance)
– or –
dTexture = 181,162 * tan(size/distance)
Instead of this:
Thanks