latitude
https://www.esrl.noaa.gov/gmd/grad/solcalc/
Shadows and Trigonometry
18m, 10m, β
β = arctan(18/10) in degrees = 60.9°
w = 25m / tan(1.3°) = 1101m
MC = 40,000Km / 3.68, MC = 10,900K
distance to the moon
10900 = πd
d = 3470km
tan(0.5°)=3470 / L
L = 3470 / tan(0.5) = 398,000 km
distance to the sun
cos α = 400,000/L
L = 400,000/ cos89.853°
L = 156,000,000 km
