{
  "name": "Trigonometric Functions of Angles",
  "order": 6,
  "challenges": [
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      "id": "59a5801209a6acac5983b557",
      "title": "Angle measure",
      "description": [
        ""
      ],
      "challengeSeed": [
        ""
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      "tests": [
        ""
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    {
      "id": "59a5801209a6acac5983a636",
      "title": "Trigonometry of right triangles",
      "description": [
        ""
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      "challengeSeed": [
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      "tests": [
        ""
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    },
    {
      "id": "59a5801209a6acac5983a637",
      "title": "Trigonometric functions of angles",
      "description": [
        ""
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      "challengeSeed": [
        ""
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      "tests": [
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    },
    {
      "id": "59a5801209a6acac5983a638",
      "title": "Law of sines",
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      "challengeSeed": [
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    {
      "id": "59a5801209a6acac5983a639",
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      "challengeSeed": [
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      ],
      "tests": [
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  ]
}