正切函数演示 by Patrick Kennedy

GeoGebra 命令及参数

1. Ray(A, B_1) → a
2. Rotate(B_1, θ, A) → G
3. Ray(A, C_1) → b
4. Angle(B_1, A, C_1) → α_1
5. Point(a) → F
6. Segment(A, F) → c
7. Segment(F, B_1) → d
8. Point(c) → B
9. OrthogonalLine(B, c) → e
10. Point(d) → D
11. OrthogonalLine(D, d) → g
12. Intersect(e, b) → C
13. Intersect(g, b) → E
14. Point(g) → I
15. Line(I, a) → h
16. OrthogonalLine(A, a) → i
17. Intersect(h, i) → J
18. Intersect(g, h) → K
19. Segment(D, I) → f
20. Segment(A, J) → j
21. Segment(J, I) → AD
22. Segment(A, B) → AB
23. Segment(C, B) → BC
24. Segment(B, D) → k
25. Segment(E, D) → DE
26. Segment(A, E) → l
27. Polygon(A, B, C) → veelhoek1, c_1, a_1, b_1
28. Polygon(A, D, E) → veelhoek2, e_1, a_2, d_1
29. Angle(C, B, A) → β_1
30. Angle(E, D, A) → γ
31. Angle(B, A, C) → β