托甘斯直角三角形三角函数

GeoGebra 命令及参数

1. Segment(A_2, B_4) → f
2. OrthogonalLine(B_4, f) → g
3. Point(g) → B_2
4. Segment(B_4, B_2) → h
5. Segment(A_2, B_2) → i
6. Segment(A_3, E) → j
7. OrthogonalLine(E, j) → k
8. Point(k) → B_3
9. Segment(E, B_3) → l
10. Segment(B_3, A_3) → m
11. Angle(B_2, B_4, A_2) → α
12. Angle(B_3, E, A_3) → β
13. Angle(B_4, A_2, B_2) → γ
14. Angle(A_2, B_2, B_4) → δ
15. Angle(E, A_3, B_3) → ε
16. Angle(A_3, B_3, E) → ζ
17. Segment(A_1, B) → n
18. OrthogonalLine(B, n) → p
19. Point(p) → B_1
20. Segment(B, B_1) → q
21. Segment(B_1, A_1) → r
22. Angle(B_1, B, A_1) → η
23. Angle(B, A_1, B_1) → θ
24. Angle(A_1, B_1, B) → ι