三角測量  湖寬
Author: 藍邦偉  老師

三角測量  湖寬

A = (-3.0780000000000003, 0.6980000000000005)
B = (10.188000000000002, 1.0060000000000004)
a = Segment(A, B)
O = (1.08, 1.8420000000000007)
b = Segment(A, O)
c = Segment(O, B)
α = Angle(A, O, B)