单位圆与三角函数 by Antalcides Olivo

GeoGebra 命令及参数

1. Circle((α, 0), 1) → c
2. OrthogonalLine(sine_{positive period}, xAxis) → d
3. Intersect(d, xAxis) → cosinus_{postive period}
4. Polygon(Center, sine_{positive period}, cosinus_{postive period}) → polígono1, d_1, center, a_1
5. OrthogonalLine(sine_{positive period}, yAxis) → e
6. Intersect(e, yAxis) → C
7. Segment(sine_{positive period}, C) → f
8. Segment(sine, C) → g
9. Intersect(c, xAxis, 2) → Intersection_{tangent}
10. Line(Center, sine_{positive period}) → generatrix
11. Tangent(Intersection_{tangent}, c) → h,
12. Intersect(c, i) → Intersection_{cotangent},
13. Intersect(i, generatrix) → D
14. CircleArc(Center, Intersection_{tangent}, sine_{positive period}) → k
15. Intersect(xAxis, yAxis) → A
16. Intersect(generatrix, h) → tangent_{positive period}
17. Intersect(i, generatrix) → cotangent_{positive period}
18. Intersect(generatrix, h) → secant_{positive period}
19. Polygon(Center, secant_{positive period}, Intersection_{tangent}) → polígono2, intersection_{tangent}, center_1, b_1
20. Intersect(i, generatrix) → cosecant_{positive period}
21. Segment(Center, cosecant_{positive period}) → j
22. Polygon(cotangent_{positive period}, Intersection_{cotangent}, Center) → polígono3, center_2, cotangent_1, intersection_{cotangent}
23. Segment(cotangent_{positive period}, Intersection_{cotangent}) → p