三角函数与恒等式演示 by Philip Collett

GeoGebra 命令及参数

1. Vector(A_x, A) → v
2. If(surd, SurdText[yval], Text[yval]) → ytext
3. If(surd, SurdText[xval], Text[xval]) → xtext
4. Intersect(xAxis, yAxis) → O
5. Segment(O, A) → a
6. Segment(O, A_x) → χ
7. Segment(A_x, A) → γ
8. Angle(xAxis, a) → β
9. Point(a) → C
10. Circle(C, A) → c
11. Length(a) → r
12. Midpoint(a) → mp
13. Corner(1, 1) → Cnr1
14. Corner(1, 2) → Cnr2
15. Corner(1, 3) → Cnr3
16. Corner(1, 4) → Cnr4
17. Polygon(CN1, CN2, CN3, CN4) → Panel, cn1, cn2, cn3, cn4