单位圆与三角函数 by Jesse Parete

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Circle(A, B) → c
3. Point(c) → C
4. Tangent(C, c) → a,
5. Segment(A, C) → b
6. OrthogonalLine(C, xAxis) → d
7. Intersect(d, xAxis) → D
8. Segment(C, D) → e
9. OrthogonalLine(C, yAxis) → f
10. Intersect(f, yAxis) → E
11. Segment(C, E) → g
12. Intersect(c, xAxis) → G, H
13. Point(c) → O
14. CircumcircleArc(G, O, C) → q
15. Point(b) → F
16. Vector(A, F) → u
17. Point(b) → I
18. Angle(u) → θ
19. Intersect(b, g) → L
20. Text(" " + (x(L))) → text10
21. Point(g) → J
22. Point(e) → K
23. Text(" " + (y(L))) → text11