三角函数与单位圆 by Mikkel Stouby Petersen

GeoGebra 命令及参数

1. Point(xAxis) → I
2. Circle(A, 1) → c
3. Point(c) → P
4. Ray(P, A) → l
5. Ray(A, P) → d
6. Intersect(c, xAxis, 2) → B
7. Angle(B, A, P) → α
8. Intersect(c, yAxis, 1) → C
9. Intersect(c, xAxis, 1) → D
10. Intersect(c, yAxis, 2) → E
11. Segment(G, P) → a
12. OrthogonalLine(B, xAxis) → e
13. Intersect(e, l) → R
14. Intersect(d, e) → H
15. Segment(H, B) → f
16. If(x(P) > 0, (x(J), y(H)), (x(J), y(R))) → M
17. Locus(M, P) → loc1
18. Locus(L, P) → loc2
19. Locus(K, P) → loc3
20. OrthogonalLine(I, xAxis) → i
21. Segment(A, H) → k
22. Segment(B, R) → m
23. OrthogonalLine(S, xAxis) → g
24. Segment(E, C) → h
25. Segment(B, D) → j
26. Segment(I, S) → n
27. Segment(A, P) → p
28. Segment(A, R) → q
29. Segment(P, H) → r
30. Midpoint(H, B) → Q_2
31. Midpoint(G, A) → U
32. Midpoint(G, P) → W
33. Midpoint(A, P) → Z
34. Midpoint(R, B) → Q_3
35. Point(p) → F
36. Segment(A, G) → s