正弦函数的几何表示

GeoGebra 命令及参数

1. Segment(O, B_1) → h_1
2. Circle(O, 3.141592653589793) → c
3. Intersect(c, h_1) → D_1,
4. Rotate(D_1, x(W), O) → A_2
5. Intersect(xAxis, yAxis) → Origin
6. Segment(Origin, O) → h
7. Intersect(c, h) → D,
8. OrthogonalLine(D, xAxis) → c_1
9. Rotate(D, x(W), O) → A
10. OrthogonalLine(A, xAxis) → g
11. Intersect(g, xAxis) → B
12. Segment(B, O) → k
13. Segment(O, A) → b
14. Intersect(b, k) → E
15. Segment(A_2, O) → b_1
16. Intersect(b_1, c_1) → F
17. OrthogonalLine(Origin, xAxis) → d
18. OrthogonalLine(Origin, d) → f
19. Point(xAxis) → G
20. Ray(Origin, G) → m
21. Angle(D, O, A) → β
22. Textfield(Θ) → inputBox1
23. Segment(O, D) → a
24. OrthogonalLine(A, a) → e
25. Segment(A, B) → j
26. Segment(W, Origin) → n
27. Segment(X, W) → q
28. Segment(W, Y) → s
29. Segment(W, Z) → t
30. Angle(A, B, O) → γ
31. Segment(F, D) → d_1
32. Segment(F, A) → e_1
33. Midpoint(q) → H
34. Midpoint(s) → I
35. Midpoint(t) → S
36. Segment(B, O) → p
37. Point(yAxis) → P
38. Point(yAxis) → Q
39. Vector(P, Q) → u
40. Point(u) → R
41. Point(xAxis) → T
42. Textfield(speed) → inputBox2
43. Angle(T, W, X) → δ
44. Angle(T, W, Y) → ε
45. Vector(U, V) → z
46. Vector(A_1, B_1) → u_1
47. Vector(A_1, B_1) → v_1
48. Vector(C_1, T) → v
49. Vector(V, U) → z_1
50. Segment(A_2, Y) → I_1
51. Angle(D_1, O, A_2) → β_1
52. OrthogonalLine(A_2, xAxis) → g_1
53. Intersect(g_1, xAxis) → B_2
54. Segment(A_2, B_2) → a_1
55. Angle(A_2, B_2, O) → γ_1
56. If(f_1 ≟ 1, true, false) → FA
57. If(f_1 ≟ 0, true, false) → FB
58. Polygon(E_1, F_1, G_1, H_1) → poly1, e_2, f_2, g_2, h_2