正弦定理的歧义情况SSA

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A_1
2. Point(xAxis) → F
3. Ray(A_1, F) → c_1
4. Rotate(F, A, A_1) → F'
5. Angle(F, A_1, F') → β
6. Ray(A_1, F') → d_1
7. Circle(A_1, c) → e
8. Intersect(e, d_1, 1) → B
9. Segment(A_1, B) → c_3
10. Circle(B, a) → c_2
11. Intersect(c_2, c_1) → D, C
12. Segment(B, C) → a_2
13. Segment(B, D) → g
14. Segment(A_1, D) → i
15. Point(i) → E
16. Segment(A_1, C) → j
17. Point(j) → G
18. OrthogonalLine(B, c_1) → k
19. Intersect(c_2, k) → H, I
20. Segment(H, B) → l
21. Angle(B, D, A_1) → γ
22. Angle(B, C, A_1) → δ
23. Point(c_3) → J
24. Textfield(a) → inputBox1
25. Textfield(c) → inputBox2
26. Textfield(A) → inputBox3