正弦余弦曲线

GeoGebra 命令及参数

1. Circle(B, A) → c
2. Point(c) → C
3. Point(c) → D
4. Segment(B, C) → a
5. OrthogonalLine(C, yAxis) → d
6. OrthogonalLine(D, xAxis) → e
7. Intersect(d, e) → E
8. Segment(D, E) → f
9. Segment(C, E) → g
10. Segment(D, C) → h
11. Angle(C, E, D) → α
12. Angle(xAxis, a) → β
13. Angle(C, B, D) → γ
14. Angle(E, C, B) → δ
15. Angle(E, D, C) → ε
16. Line(C, yAxis) → b
17. Intersect(b, xAxis) → G
18. Segment(C, G) → i