三角函数图像的构造

GeoGebra 命令及参数

1. Circle(A, B) → c
2. Point(c) → K
3. Angle(B, A, K) → α
4. Segment(A, K) → a
5. Segment(B, C) → b
6. OrthogonalLine(B, b) → d
7. Line(A, K) → e
8. Intersect(d, e) → L
9. Segment(L, A) → f
10. OrthogonalLine(K, xAxis) → g
11. OrthogonalLine(A, xAxis) → h
12. Line(K, xAxis) → i
13. Intersect(h, i) → M
14. Intersect(g, xAxis) → N
15. Circle(A, N) → k
16. Line(O, b) → j
17. Line(B_1, C_1) → l
18. Line(Z, A_1) → m
19. Line(U, T) → n
20. Intersect(c, h, 2) → D_1
21. Intersect(c, h, 1) → E_1
22. Intersect(c, xAxis, 1) → F_1
23. Segment(K, N) → q
24. Segment(B, L) → s
25. Segment(K, N) → t
26. Segment(A, N) → a_1
27. Intersect(d, e) → G_1
28. Circle(A, G_1) → c_1
29. OrthogonalLine(D_1, h) → b_1
30. Intersect(e, b_1) → H_1
31. Circle(A, H_1) → d_1
32. OrthogonalLine(E_1, h) → e_1
33. Intersect(e, b_1) → I_1
34. Segment(D_1, I_1) → h_1
35. Mirror(D_1, g_1) → J_1
36. Mirror(I_1, g_1) → K_1
37. Segment(J_1, K_1) → i_1
38. Segment(N_1, S) → f_1
39. Segment(M_1, R) → k_1
40. Segment(N_1, Q) → l_1
41. Segment(M_1, P) → m_1
42. Segment(N_1, U) → n_1
43. Segment(M_1, T) → p_1
44. Segment(A, G_1) → s_1
45. Line(B, G_1) → p
46. OrthogonalLine(K, xAxis) → q_1
47. Intersect(q_1, xAxis) → V
48. Segment(A, V) → r_1
49. OrthogonalLine(W, h) → t_1
50. Segment(N_1, P_1) → a_2
51. Segment(O_1, M_1) → b_2
52. Segment(V, K) → c_2
53. OrthogonalLine(F_1, xAxis) → d_2
54. Intersect(c_1, e, 2) → Q_1
55. Segment(A, Q_1) → e_2
56. Intersect(d_1, e, 2) → R_1
57. Segment(A, H_1) → f_2
58. Segment(A, R_1) → g_2
59. OrthogonalLine(K, h) → h_2
60. Intersect(h, h_2) → S_1
61. Segment(K, S_1) → i_2
62. Segment(A, I_1) → j_2