Line of sight

December

June

Earth = Intersect(xAxis, yAxis)
c = Circle(Earth, 2.0)
Center_{Sun} = Point(xAxis)
d = Circle(Center_{Sun}, 4.0)
α = 2.076941809873252 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
C = Point(d)
Sun = Rotate(C, α, Center_{Sun})
β = Angle(C, Center_{Sun}, Sun)
a = Segment(C, Center_{Sun})
b = Segment(Center_{Sun}, Sun)
e = Segment(Earth, Sun)
D = Point(c)
γ = 1.2740903539558606 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
ε = 3.385938748868999 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
Center_{Planet} = Rotate(D, γ, Earth)
δ = Angle(D, Earth, Center_{Planet})
f = 7.3 (slider from 0 to 15, step 0.1)
g = Circle(Center_{Planet}, f)
A = Point(g)
Planet = Rotate(A, ε, Center_{Planet})
ζ = Angle(A, Center_{Planet}, Planet)
h = Segment(Center_{Planet}, Planet)
i = Segment(Earth, Sun)
j = Segment(Sun, Center_{Sun})
k = Segment(Earth, Center_{Planet})