余弦函数 by JM Arranz, JA Mora, M Sada y R Losada

GeoGebra 命令及参数

1. Point(yAxis) → B
2. OrthogonalLine(B, yAxis) → f
3. Point(f) → C
4. Point(f) → D
5. Segment(C, D) → g
6. Point(g) → E
7. Intersect(xAxis, yAxis) → O
8. Rotate(A, ang, O) → P
9. Circle((0, 0), 1) → c
10. Angle(AA, O, PP) → α
11. Segment(P, (x(P), 0)) → sen
12. Polygon(P, O, (x(P), 0)) → Q, a, d, e
13. Segment(F, G) → b
14. Segment(F, E) → h
15. Segment(O, F) → j
16. Circle(O, dis) → p
17. CircleArc(O, AA / 2, PP / 2) → k