補角關係(2)
Author: 藍邦偉  老師

(1,0)

x

y

P(x,y)

廣義角的補角

Q(cos(180°-θ),sin(180°-θ))

P(cosθ,sinθ)

Q(-x,y)

sin(180°-θ)=sinθ

cos(180°-θ)=-cosθ

θ-90°

90°-θ

O: 0.5 * (Corner[1.0] + Corner[3.0])
u = Vector((x(Corner[1.0]), y(O)), (x(Corner[3.0]), y(O)))
v = Vector((x(O), y(Corner[1.0])), (x(O), y(Corner[3.0])))
c = Circle(O, 3.0)
A = (3, 0)
θ = 0.8028514559173916 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
P: (3.0 * cos(θ), 3.0 * sin(θ))
a = Segment(O, P)
A_1: 0.6 * O + 0.4 * A
B_1: 0.6 * O + 0.4 * P
Q: (3.0 * cos(180.0° - θ), 3.0 * sin(180.0° - θ))
e = Segment(O, Q)
A_2: 0.2 * A + 0.8 * O
B_2: 0.4 * Q + 0.6 * O
A_3: 0.2 * P + 0.8 * O
B = (-3, 0)
B_3: 0.4 * P + 0.6 * O
b = Segment(P, Q)
C = (0, 3)
C_1: 0.6 * O + 0.4 * C
d = CircleArc(O, B_2, C_1)
f = CircleArc(O, C_1, B_3)
R: (0.0, y(Q))