正切函数图像绘制

GeoGebra 命令及参数

1. Line(B, O) → a
2. Circle(O, 1) → c
3. Intersect(c, a, 2) → C
4. Rotate(C, α, O) → D
5. Angle(C, O, D) → β
6. Segment(O, D) → b
7. Distance(D, a) → d
8. OrthogonalLine(D, a) → e
9. Intersect(a, e) → A_2
10. Segment(D, A_2) → g
11. Segment(A_1, D_1) → h
12. Midpoint(D, A_2) → E1
13. Midpoint(A_1, D_1) → F
14. Point(xAxis) → G
15. Segment(G, A_1) → i
16. Intersect(c, a, 2) → A
17. Intersect(c, a, 1) → I
18. Segment(I, A) → j
19. Intersect(c, j, 2) → J
20. Segment(O, A_2) → l
21. Midpoint(O, D) → K
22. Midpoint(O, A_2) → E2
23. Midpoint(O, D) → E