单位圆与三角函数 by Morrison Brusett

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Circle(A, 1) → c
3. Intersect(c, xAxis, 2) → B
4. Intersect(c, yAxis, 2) → C
5. Intersect(c, xAxis, 1) → D
6. Intersect(c, yAxis, 1) → E
7. Point(c) → G
8. Segment(A, G) → a
9. OrthogonalLine(G, xAxis) → b
10. Intersect(b, xAxis) → H
11. Segment(A, H) → e
12. Point(c) → J
13. Point(c) → K
14. Point(c) → L
15. Segment(A, K) → i
16. Segment(A, L) → j
17. Point(c) → M
18. Point(c) → N
19. Point(c) → O
20. Segment(A, N) → l
21. Point(c) → P
22. Point(c) → Q
23. Point(c) → R
24. Segment(A, O) → m
25. Segment(A, P) → n
26. Segment(A, Q) → p
27. Segment(A, R) → q
28. Point(c) → S
29. Point(c) → T
30. Point(c) → U
31. Segment(A, S) → r
32. Segment(A, T) → s
33. Segment(A, U) → t
34. Angle(B, A, G) → θ
35. Segment(G, H) → a_1
36. Segment(A, J) → b_1
37. Point(b_1) → F
38. Segment(M, F) → k