单位圆与三角函数比值图解

GeoGebra 命令及参数

1. Point(eq1) → B
2. Intersect(xAxis, yAxis) → A
3. Point(eq1) → C
4. Segment(A, C) → h
5. Point(eq1) → D
6. Segment(A, D) → i
7. Point(eq1) → E
8. Segment(A, E) → j
9. Point(eq1) → F
10. Segment(A, F) → k
11. Intersect(eq3, g) → G
12. Segment(E, G) → l
13. Point(eq2) → H
14. Segment(F, H) → m
15. Intersect(eq1, h, 1) → I
16. Point(eq2) → J
17. Segment(I, J) → n
18. Point(f) → K
19. Segment(D, K) → p
20. Point(g) → L
21. Segment(H, L) → q
22. Point(f) → M
23. Segment(J, M) → r
24. Point(eq3) → N
25. Segment(K, N) → s
26. Point(xAxis) → O
27. Segment(L, O) → t
28. Point(xAxis) → P
29. Segment(M, P) → a
30. Point(xAxis) → Q
31. Segment(K, Q) → b
32. Intersect(eq1, eq3, 1) → R
33. Segment(G, R) → c
34. Intersect(eq1, eq2, 1) → S
35. Segment(S, J) → d
36. Segment(R, N) → e
37. Segment(S, H) → f_1
38. Segment(Q, A) → g_1
39. Segment(A, O) → h_1
40. Segment(Q, R) → i_1
41. Segment(I, T) → j_1
42. Point(g_1) → U
43. Segment(D, U) → k_1
44. Point(g_1) → V
45. Segment(E, V) → l_1
46. Point(h_1) → W
47. Segment(F, W) → m_1
48. Point(yAxis) → Z
49. Segment(E, Z) → n_1
50. Point(yAxis) → A_1
51. Segment(F, A_1) → p_1
52. Point(yAxis) → B_1
53. Segment(I, B_1) → q_1
54. Point(yAxis) → C_1
55. Segment(D, C_1) → r_1