{
  "aliases": null,
  "backlinks": [
    {
      "field": "defines",
      "target": "0WB57D9488"
    },
    {
      "field": "uses",
      "target": "4K7TJE5KM4"
    },
    {
      "field": "uses",
      "target": "A6YS3A9DNP"
    },
    {
      "field": "uses",
      "target": "H03BGDDF0N"
    },
    {
      "field": "uses",
      "target": "M0G4AASSG7"
    },
    {
      "field": "uses",
      "target": "T761KPKPV6"
    }
  ],
  "body": "\n## Summary\n\nSine and cosine are the basic trigonometric functions. For an angle $x$, the point $(\\cos x, \\sin x)$ lies on the unit circle, and the two functions are periodic with period $2\\pi$. The node [[sine and cosine|0WB57D9488]] gives the precise definition by power series.\n",
  "commit": "ff8a40749dc16545e3d2fc637f6b0196e81d0bfa",
  "front": {
    "kind": "concept",
    "msc": [
      "33B10",
      "26A09"
    ],
    "name": "Sine and cosine",
    "same_as": {
      "wikidata": "Q13647261",
      "wikipedia": "Sine and cosine"
    },
    "sources": [
      {
        "locator": "lead section",
        "url": "https://en.wikipedia.org/wiki/Sine_and_cosine"
      }
    ],
    "tag": "08WFZP6P89"
  },
  "kind": "concept",
  "link": "https://tamnd.github.io/math2/node/08WFZP6P89/",
  "links": null,
  "markdown": "https://tamnd.github.io/math2/node/08WFZP6P89.md",
  "msc": [
    "33B10",
    "26A09"
  ],
  "name": "Sine and cosine",
  "prov": null,
  "role": "",
  "source": "https://github.com/tamnd/math2/blob/main/nodes/08W/08WFZP6P89.md",
  "status": null,
  "tag": "08WFZP6P89",
  "uri": "m2://08WFZP6P89",
  "url": "https://tamnd.github.io/math2/wiki/sine-and-cosine/",
  "writing": {
    "tag": "08WFZP6P89",
    "kind": "concept",
    "level": "W0",
    "next": [
      {
        "what": "an inventory row",
        "note": "the row of the inventory that the node accounts for",
        "have": 0,
        "want": 1
      }
    ]
  }
}