三角測量
Author: 藍邦偉  老師

三角測量

A = (-3.62, -2.48)
B = (4.38, 0.02)
t = 0.356 (slider from 0 to 1, step 0.0010)
C_1: A + t * Vector[A, B]
a: x = x(B)
C = Point(a)
b = Segment(C, B)
c = Segment(B, A)
d = Segment(C_1, C)
α = Angle(B, C_1, C)