Unit Circle: Basic Graph of Trigonometric Functions

Unit Circle: Basic Graph of Trigonometric Functions
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2014-11-17 01:43
This example demonstrates the unit circle as the foundation for trigonometric functions. The key mathematical concepts involved include trigonometric functions, geometric properties of circles, and the relationship between points and circles in a coordinate system. Construction involves GeoGebra commands such as Vector, Translate, Circle, and others. Suitable for middle or high school mathematics learning to understand the basic concepts and graph characteristics of trigonometric functions.

GeoGebra Commands & Parameters

  1. Vector((0, 0), (1, 0)) → v
  2. Translate(A, v) → A'
  3. Ray(A, A') → a
  4. Point(a) → B
  5. Segment(A, B) → b
  6. Vector(A, B) → Radius
  7. Translate(C, Radius) → C'
  8. Circle(C, C') → c
  9. Point(c) → D
  10. CircleArc(C, C', D) → d
  11. Line(C, C') → e
  12. OrthogonalLine(D, e) → f
  13. Intersect(f, e) → E
  14. Segment(D, E) → g
  15. Point(Circle[F, abs(d)]) → G
  16. Segment(F, G) → h
  17. Vector(E, D) → Chord_1
  18. OrthogonalLine(F, Radius) → i
  19. Translate(i, Radius) → i'
  20. Translate(i', Radius) → i''
  21. Translate(i'', Radius) → i'''
  22. Translate(i''', Radius) → j
  23. Translate(j, Radius) → j'
  24. Translate(j', Radius) → j''
  25. Translate(G, Chord_1) → G'
  26. Segment(G', G) → k
  27. Intersect(i', h) → H
  28. Intersect(i'', h) → I
  29. Intersect(i''', h) → J
  30. Intersect(j, h) → K
  31. Intersect(j', h) → L
  32. Intersect(j'', h) → M
  33. Rotate(B, 90*°, A) → B'
  34. Translate(A, Radius) → A'_1
  35. Vector(A, A'_1) → u
  36. Vector(A, B') → w
  37. Ray(F, G) → m
  38. Translate(F, w) → F'
  39. Translate(G, w) → G'_1
  40. Ray(F', G'_1) → m'
  41. Translate(F', w) → F''
  42. Translate(G'_1, w) → N
  43. Ray(F'', N) → m''
  44. Translate(F'', w) → F'''
  45. Translate(N, w) → N'
  46. Ray(F''', N') → m'''
  47. Mirror(F''', m) → O
  48. Mirror(N', m) → N''
  49. Ray(O, N'') → n
  50. Mirror(F'', m) → F'''_1
  51. Mirror(N, m) → N'_1
  52. Ray(F'''_1, N'_1) → m'''_1
  53. Mirror(F', m) → F''_1
  54. Mirror(G'_1, m) → P
  55. Ray(F''_1, P) → m''_1
  56. OrthogonalLine(C', m') → l
  57. Line(C, D) → p
  58. Intersect(l, p) → Q
  59. Segment(Q, C') → r
  60. Vector(C', Q) → Tangent
  61. Translate(G, Tangent) → G'_2
  62. Segment(G'_2, G) → t
  63. Intersect(l, p) → R
  64. Segment(R, C) → a_1
  65. Point(a_1) → S
  66. Vector(C, R) → Secant
  67. Line(C, C') → b_1
  68. OrthogonalLine(D, Secant) → c_1
  69. Intersect(b_1, c_1) → T
  70. Vector(C, T) → Secant_2
  71. Translate(G, Secant_2) → G'_3
  72. Rotate(G'_3, 90*°, G) → U
  73. Segment(G, U) → d_1
  74. Segment(C, T) → e_1
  75. Ray(C, C') → g_1
  76. Rotate(C, 57.29577951308232*°, C) → C'_1
  77. Rotate(C', 57.29577951308232*°, C) → C''
  78. Ray(C'_1, C'') → h_1
  79. Intersect(d, h_1) → V,
  80. Rotate(C'_1, 57.29577951308232*°, C) → W
  81. Rotate(C'', 57.29577951308232*°, C) → C'''
  82. Ray(W, C''') → i_1
  83. Rotate(W, 57.29577951308232*°, C) → W'
  84. Rotate(C''', 57.29577951308232*°, C) → Z
  85. Ray(W', Z) → j_1
  86. Rotate(W', 57.29577951308232*°, C) → W''
  87. Rotate(Z, 57.29577951308232*°, C) → Z'
  88. Ray(W'', Z') → k_1
  89. Rotate(W'', 57.29577951308232*°, C) → W'''
  90. Rotate(Z', 57.29577951308232*°, C) → Z''
  91. Ray(W''', Z'') → l_1
  92. Rotate(W''', 57.29577951308232*°, C) → A_1
  93. Rotate(Z'', 57.29577951308232*°, C) → Z'''
  94. Ray(A_1, Z''') → m_1
  95. Intersect(d, i_1, 1) → B_1
  96. Intersect(d, j_1, 1) → C_1
  97. Intersect(d, k_1, 1) → D_1
  98. Intersect(d, l_1, 1) → E_1
  99. Intersect(d, m_1, 1) → F_1
  100. Line(D, b) → p_1
  101. OrthogonalLine(C, p_1) → q_1
  102. Intersect(p_1, q_1) → G_1
  103. Segment(D, G_1) → r_1
  104. Vector(G_1, D) → Cochord
  105. Translate(G, Cochord) → G'_4
  106. Rotate(G'_4, 90*°, G) → H_1
  107. Segment(H_1, G) → s_1
  108. Rotate(C', 90*°, C) → C''_1
  109. OrthogonalLine(C''_1, l) → t_1
  110. Intersect(p, t_1) → I_1
  111. Segment(C''_1, I_1) → a_2
  112. Vector(C''_1, I_1) → Cotangent
  113. Translate(G, Cotangent) → G'_5
  114. Rotate(G'_5, 90*°, G) → J_1
  115. Segment(J_1, G) → b_2
  116. Line(C, C') → c_2
  117. Intersect(p, t_1) → K_1
  118. Segment(C, K_1) → d_2
  119. Line(C, C''_1) → e_2
  120. OrthogonalLine(D, d_2) → f_2
  121. Intersect(e_2, f_2) → L_1
  122. Segment(C, L_1) → g_2

AI Drawing Prompt Reference

Draw a unit circle. The center is the center, radius is the radius. Draw a diameter and a perpendicular line intersecting at a point. Connect the center and the intersection point to get a chord. Draw an arc. Rotate a point around another point by 90 degrees. Reflect two points about a line. Describe the relationships: unit circle, diameter, perpendicular line, intersection point, chord, arc, rotated point, and reflected points.
The prompt above was compiled from the original drawing commands and is for reference only.