平方關係
Author: 藍邦偉  老師

拉動A,B,C三點觀察

平方關係

sin²θ+cos²θ= \frac{ (對邊)²+(鄰邊)² }{ (斜邊)²} 

=1

A = (-2.18, 0.86)
a_1: y = y(A)
B = Point(a_1)
b_1: x = x(B)
C = Point(b_1)
c = Segment(A, B)
a = Segment(B, C)
b = Segment(C, A)
θ = Angle(C, A, B)
α = Angle(C, B, A)
文字3: "= \frac{ " + a + "²+" + c + "² }{" + b + "² } "
文字4: "= \frac{ " + (a^(2.0)) + "+" + (c^(2.0)) + " }{" + (b^(2.0)) + " }"
文字5: "= \frac{ " + (a^(2.0) + c^(2.0)) + " }{" + (b^(2.0)) + " }"