U = Point(xAxis)
O = Intersect(xAxis, yAxis)
c = Circle(O, U)
A = Point(c)
α = Angle(U, O, A)
tg: tan(α)
sen: sin(α)
cos: cos(α)
a = Segment(O, A)
t = OrthogonalLine(U, xAxis)
f = OrthogonalLine(A, yAxis)
g = OrthogonalLine(A, xAxis)
C = Intersect(f, yAxis)
D = Intersect(g, xAxis)
h = Segment(C, A)
i = Segment(A, D)
d = Line(O, A)
T = Intersect(t, d)
b = Segment(O, T)
e = Segment(O, D)
j = Segment(O, C)
k = Segment(T, U)
T1: "α=" + α
T2: "A=" + A
T3: "sen(α)=" + sen
T4: "cos(α)=" + cos
T5: "tg(α)= \frac{ " + sen + " }{" + cos + " } = " + tg