e

d

f

l

e = 40 (slider from 30 to 100, step 0.1)
f = 43.6 (slider from 40 to 80, step 0.1)
l = 102.7 (slider from 1 to 300, step 0.1)
E = Segment((0.0, 0.0), (0.0, e))
d: sqrt(l * l - f * f)
D = Segment((0.0, 0.0), (d, 0.0))
H = Segment((d, 0.0), (d, -(f)))
L = Segment((0.0, 0.0), (d, -(f)))
α = Angle(L, D)
P = Ray((d, 0.0), (0.0, E))
φ = Angle((0.0, E), (d, 0.0), (0.0, 0.0))
texte2: "φ ou h = " + φ
texte1: "e = " + e + " mm" + "
l = " + f + " mm" + " " + "
 " + "f = " + f + " mm"