p = 10.3 (slider from 0 to 15, step 0.1)
α = 0.5235987755982988 rad (slider from 0 to 1.5707963267948966, step 0.017453292519943295)
C = (-1.2333333333333336, -2.1)
A = Point(Circle[C, p])
a_1 = Segment(C, A)
b_2 = OrthogonalLine(A, a_1)
C_1 = Rotate(A, α, C)
β = Angle(A, C, C_1)
c_1 = Ray(C, C_1)
B = Intersect(b_2, c_1)
P, b, c, a = Polygon(C, A, B)
T1: "sin\:α\:=\: \frac{ c }{ a}\:=\: \ \frac{" + c + " }{" + a + " }\:=\:" + (c / a)
T2: "cos\:α\:=\: \frac{b }{ a}\:=\: \ \frac{" + b + " }{" + a + " }\:=\:" + (b / a)
T3: "tan\:α\:=\: \frac{ c }{ b}\:=\: \ \frac{" + c + " }{" + b + " }\:=\:" + (c / b)