单位圆 by Taylor

GeoGebra 命令及参数

1. Point(c) → A
2. Sequence((π * k) / 12, k, 0, 24) → Angles
3. Sequence((cos(Element[Angles306090, k]), sin(Element[Angles306090, k])), k, 1, 9) → Pts306090
4. Segment(O, B) → d
5. Min(abs(Angles306090 - acos(x(A)))) → d306090
6. Min(abs(Angles459045 - acos(x(A)))) → d459045
7. Min(abs(AnglesVH - acos(x(A)))) → dVH
8. If((d306090 ≤ d459045) ∧ (d306090 ≤ dVH), 1, 0) → is306090
9. If((d459045 < d306090) ∧ (d459045 < dVH), 1, 0) → is459045
10. If((dVH < d306090) ∧ (dVH < d459045), 1, 0) → isVH
11. If(y(A) > 0, acos(x(A)), π + acos(-x(A))) → theta
12. Polygon(O, A, B) → Triangle306090, b, o, a
13. Polygon(O, A, B) → Triangle459045, b_1, o_1, a_1
14. Polygon(O, A, B) → TriangleVH, b_2, o_2, a_2
15. Sequence((cos(Element[Angles459045, k]), sin(Element[Angles459045, k])), k, 1, 4) → Pts459045
16. Sequence((cos(Element[AnglesVH, k]), sin(Element[AnglesVH, k])), k, 1, 4) → PtsVH
17. Sequence((cos(Element[AnglesAll, k]), sin(Element[AnglesAll, k])), k, 1, Length[AnglesAll]) → PtsAll
18. Element(AnglesAllLabels, 2) → Fail
19. Random(1, 14) → randInt
20. If(theta > π, "-", "") → negSin
21. If((π / 2 < theta) ∧ (theta < (3 * π) / 2), "-", "") → negCos
22. If(tan(theta) < 0, "-", "") → negTan
23. Angle(O2, O, A) → alphaGreen
24. If(theta ≟ π / 3 ∨ theta ≟ 2 * π / 3 ∨ theta ≟ 4 * π / 3 ∨ theta ≟ 5 * π / 3, 1) → isTall306090
25. If(theta ≟ π / 6 ∨ theta ≟ 5 * π / 6 ∨ theta ≟ 7 * π / 6 ∨ theta ≟ 11 * π / 6, 1) → isSkinny306090
26. If(theta ≟ π / 4 ∨ theta ≟ 3 * π / 4 ∨ theta ≟ 5 * π / 4 ∨ theta ≟ 7 * π / 4, 1) → isReal459045
27. If(theta ≟ 0 ∨ theta ≟ π ∨ theta ≟ 2 * π, 1) → isH
28. Point(xAxis) → C
29. Point(xAxis) → D
30. Point(xAxis) → E
31. Point(xAxis) → F
32. Point(yAxis) → G
33. Point(yAxis) → H
34. Point(yAxis) → I
35. Point(yAxis) → J
36. Point(c_1) → A_1
37. Point(c_2) → A_2
38. Angle(O2, O, A) → alphaRed
39. Angle(O2, O, A) → alphaBlue