余弦函数-一个周期

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Circle(A, 1) → c
3. OrthogonalLine(W, xAxis) → a
4. Segment(B, W) → b
5. Segment(B, A) → d
6. Segment(A, W) → e
7. Textfield(speed) → SPD
8. Textfield(t) → tEq
9. If(togTr ≟ 1, "Stop Traces", "Show Traces") → ControlTraces
10. If(togA ≟ 1, "Stop Animation", "Start Animation") → ToggleAnimation
11. Circle(A, B) → h
12. Mod(t, 1.5707963267948966) → tm
13. Arc(h, B, (0, cos(t))) → k