Sieczna

Styczna

Styczna

A = Point(yAxis)
c = Circle(A, 4)
B = Point(xAxis)
C = Point(c)
f = Line(B, C)
g, h = Tangent(B, c)
D = Intersect(c, g, 1)
E = Intersect(c, h, 1)
i = Segment(A, D)
j = Segment(A, E)
α = Angle(A, D, B)
β = Angle(A, E, B)
k = Segment(D, E)
γ = Angle(D, A, E)
δ = Angle(D, E, B)