变量部分视角下的三角函数

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Circle(A, a) → c
3. Line(A, xAxis) → f
4. Line(A, yAxis) → g
5. Intersect(g, yAxis) → B
6. Intersect(g, yAxis) → C
7. Intersect(c, g) → D, E
8. Intersect(c, f, 2) → F
9. Intersect(c, f, 1) → G
10. Line(F, g) → h
11. Line(G, g) → i
12. Line(E, f) → j
13. Line(D, f) → k
14. Intersect(i, j) → H
15. Intersect(h, j) → I
16. Intersect(h, k) → J
17. Intersect(i, k) → K
18. Circle(F, a) → d
19. Circle(E, a) → e
20. Intersect(e, g, 2) → L
21. Intersect(d, f, 2) → M
22. Line(M, h) → l
23. Line(L, j) → m
24. Intersect(i, m) → N
25. Intersect(h, m) → O
26. Intersect(l, m) → P
27. Intersect(j, l) → Q
28. Intersect(k, l) → R
29. Midpoint(A, F) → S
30. Line(S, g) → n
31. Intersect(c, n) → T, U
32. Polygon(A, S, U) → t1, u, a_1, s
33. Segment(A, U) → p
34. Segment(A, S) → q
35. Segment(S, U) → r
36. Segment(U, A) → t
37. Circle(G, a) → c_1
38. Circle(D, a) → d_1
39. Intersect(c_1, f, 1) → V
40. Intersect(d_1, g, 1) → W
41. Line(V, i) → b
42. Line(W, k) → f_1