弧度制演示

GeoGebra 命令及参数

1. Point(yAxis) → O
2. Point(xAxis) → B
3. Circle(O, B) → c
4. Point(c) → A
5. Angle(B, O, A) → α
6. OrthogonalLine(A, xAxis) → f
7. Intersect(f, xAxis) → C
8. Segment(O, A) → g
9. Segment(O, C) → h
10. OrthogonalLine(A, yAxis) → i
11. Intersect(i, yAxis) → D
12. Segment(D, O) → j
13. Segment(D, A) → k
14. Segment(A, C) → l
15. OrthogonalLine(B, xAxis) → m
16. Line(O, A) → n
17. Intersect(m, n) → E
18. Segment(B, E) → p
19. CurveCartesian(t, sin(t), t, 0, (2 * π)) → a
20. CurveCartesian(t, cos(t), t, 0, (2 * π)) → b
21. CurveCartesian(t, tan(t), t, 0, π / 2) → d
22. CurveCartesian(t, tan(t), t, π / 2, (3 * π / 2)) → e
23. CurveCartesian(t, tan(t), t, (3 * π / 2), (π * 2)) → o