muovere questa maniglia per variare l'angolo α

O = (0, 0)
c = Circle(O, 1)
A = (1, 0)
angoloα = 1.0471975511965976 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
P = Rotate(A, angoloα, O)
α_1 = Angle(A, O, P)
a = Segment(O, P)
B = (0, 1)
b = Tangent(A, c)
d = Tangent(B, c)
e = Line(O, P)
D = Intersect(e, b)
f = Segment(O, D)
E = Intersect(e, d)
g = Segment(E, O)
H: (x(P), 0)
senα = Segment(P, H)
cosα = Segment(O, H)
tgα = Segment(A, D)
cotgα = Segment(B, E)
T1: "senα=" + (sin(α_1))
T2: "cosα=" + (cos(α_1))
T3: "tgα=" + (tan(α_1))
T4: "cotgα=" + (x(E))
T6: "Radianti=" + α_1 + "/180°" + "(" + (α_1 / 180) + ") π"