三角測量
Author: 藍邦偉  老師

自帆船上觀察帆船飯店頂的仰角

三角測量

A = (12.98, 1.2)
B = (-2.22, 1.14)
D = (12.98, -0.34)
C = Corner(1.0)
多邊形1, a, b, c, d = Polygon(A, B, C, D)
E = (6.62, 1.22)
F = (6.62, 8.68)
G = Corner(4.0)
e = Segment(B, E)
多邊形2, b_1, e_1, f, g = Polygon(B, E, F, G)
H = Point(e)
h: y = y(H)
I = Point(h)
i: x = x(I)
J = Point(i)
u = Vector(H, I)
t = 0.94 (slider from 0 to 1, step 0.01)
H_1: H + t * u
j = Segment(J, I)
k = Segment(J, H_1)
H_2: H_1 + (-(0.4), 0.0)
H_3: H_1 + (0.4, 0.0)
H_4: H_1 + (0.0, -(0.3))
p = CircumcircleArc(H_3, H_4, H_2)
α = Angle(I, H_1, J)
H_5: H_1 + (0.0, 0.3)
多邊形3, l, h_5, h_1, K = Polygon(H_5, H_1, 3.0)