{"json_modified": "2015-04-17T06:51:09.606376", "slug": "Web/JavaScript/Reference/Global_Objects/Math/acos", "tags": [], "locale": "zh-CN", "title": "Math.acos()", "translations": [{"title": "Math.acos()", "url": "/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/acos", "tags": ["R\u00e9f\u00e9rence", "Reference", "Method", "Math", "JavaScript"], "summary": "The <strong><code>Math.acos()</code></strong> function returns the arccosine (in radians) of a number, that is", "localization_tags": [], "locale": "en-US", "last_edit": "2015-02-04T21:17:16", "review_tags": []}, {"title": "Math.acos()", "url": "/ja/docs/Web/JavaScript/Reference/Global_Objects/Math/acos", "tags": ["Math", "Math Methods", "JavaScript"], "summary": "\u5f15\u6570\u3068\u3057\u3066\u4e0e\u3048\u305f\u6570\u306e\u30a2\u30fc\u30af\u30b3\u30b5\u30a4\u30f3\u3092\u30e9\u30b8\u30a2\u30f3\u5358\u4f4d\u3067\u8fd4\u3057\u307e\u3059\u3002", "localization_tags": [], "locale": "ja", "last_edit": "2015-04-13T00:46:00", "review_tags": []}, {"title": "acos", "url": "/pl/docs/Web/JavaScript/Referencje/Obiekty/Math/acos", "tags": ["Dokumentacja_JavaScript", "JavaScript", "Dokumentacje", "Wszystkie_kategorie"], "summary": "", "localization_tags": [], "locale": "pl", "last_edit": "2014-05-31T00:09:00", "review_tags": []}, {"title": "Math.acos()", "url": "/fr/docs/Web/JavaScript/Reference/Objets_globaux/Math/acos", "tags": ["R\u00e9f\u00e9rence", "Reference", "Method", "Math", "JavaScript"], "summary": "La fonction <code><strong>Math.acos()</strong></code> renvoie l'arc cosinus d'une valeur exprim\u00e9e en radians. Cela est d\u00e9fini par :", "localization_tags": [], "locale": "fr", "last_edit": "2015-02-06T10:58:02", "review_tags": []}, {"title": "Math.acos()", "url": "/ru/docs/Web/JavaScript/Reference/Global_Objects/Math/acos", "tags": ["R\u00e9f\u00e9rence", "Reference", "Method", "Math", "JavaScript"], "summary": "\u041c\u0435\u0442\u043e\u0434 <strong><code>Math.acos()</code></strong> \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0430\u0440\u043a\u043a\u043e\u0441\u0438\u043d\u0443\u0441 \u0447\u0438\u0441\u043b\u0430 (\u0432 \u0440\u0430\u0434\u0438\u0430\u043d\u0430\u0445), \u0442\u043e \u0435\u0441\u0442\u044c", "localization_tags": [], "locale": "ru", "last_edit": "2015-02-05T00:26:07", "review_tags": []}, {"title": "Math.acos()", "url": "/de/docs/Web/JavaScript/Reference/Global_Objects/Math/acos", "tags": ["Math", "Method", "JavaScript"], "summary": "Die Funktion <code><strong>Math.acos()</strong></code> gibt den Arcuscosinus (im Radiantenma\u00df) einer Zahl zur\u00fcck:", "localization_tags": [], "locale": "de", "last_edit": "2015-01-22T00:20:24", "review_tags": []}, {"title": "Math.acos()", "url": "/ca/docs/Web/JavaScript/Referencia/Objectes_standard/Math/acos", "tags": [], "summary": "La funci\u00f3 <strong><code>Math.acos()</code></strong> retorna l'arccosinus (mesurat en radians) d'un nombre, \u00e9s a dir:<math display=\"block\"><semantics><mrow><mo/><mi>x</mi><mo>\u220a</mo><mo stretchy=\"false\">[</mo><mrow><mo>-</mo><mn>1</mn></mrow><mo>;</mo><mn>1</mn><mo stretchy=\"false\">]</mo><mo>,</mo><mspace width=\"thickmathspace\"/><mstyle mathvariant=\"monospace\"><mrow><mo lspace=\"0em\" rspace=\"thinmathspace\">Math.acos</mo><mo stretchy=\"false\">(</mo><mi>x</mi><mo stretchy=\"false\">)</mo></mrow></mstyle><mo>=</mo><mo lspace=\"0em\" rspace=\"0em\">arccos</mo><mo stretchy=\"false\">(</mo><mi>x</mi><mo stretchy=\"false\">)</mo><mo>=</mo><mtext> l'\u00fanic </mtext><mspace width=\"thickmathspace\"/><mi>y</mi><mo>\u220a</mo><mo stretchy=\"false\">[</mo><mn>0</mn><mo>;</mo><mi>\u03c0</mi><mo stretchy=\"false\">]</mo><mspace width=\"thinmathspace\"/><mtext>tal que</mtext><mspace width=\"thickmathspace\"/><mo lspace=\"0em\" rspace=\"0em\">cos</mo><mo stretchy=\"false\">(</mo><mi>y</mi><mo stretchy=\"false\">)</mo><mo>=</mo><mi>x</mi></mrow><annotation encoding=\"TeX\">\\forall x \\in [{-1};1],\\;\\mathtt{\\operatorname{Math.acos}(x)} = \\arccos(x) = \\text{ the unique } \\; y \\in [0; \\pi] \\, \\text{such that} \\; \\cos(y) = x</annotation></semantics></math>", "localization_tags": [], "locale": "ca", "last_edit": "2015-03-29T16:55:31", "review_tags": []}], "modified": "2015-04-17T06:51:06", "label": "Math.acos()", "localization_tags": [], "url": "/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Math/acos", "last_edit": "2014-07-24T06:17:31", "summary": "<code><strong>Math.acos()</strong></code>\u00a0\u8fd4\u56de\u4e00\u4e2a\u6570\u7684\u53cd\u4f59\u5f26\u503c\uff08\u5355\u4f4d\u4e3a\u5f27\u5ea6\uff09\uff0c\u5373\uff1a", "sections": [{"id": "Quick_Links", "title": "JavaScript \u6807\u51c6\u5e93 Math \u5c5e\u6027 Math.E Math.LN10 Math.LN2 Math.LOG10E Math.LOG2E Math.PI Math.SQRT1_2 Math.SQRT2 \u65b9\u6cd5 Math.abs() Math.acos() Math.acosh() [Translate] Math.asin() Math.asinh() [Translate] Math.atan() Math.atan2() Math.atanh() [Translate] Math.cbrt() Math.ceil() Math.clz32() Math.cos() Math.cosh() [Translate] Math.exp() Math.expm1() Math.floor() Math.fround() Math.hypot() Math.imul() Math.log() Math.log10() Math.log1p() Math.log2() Math.max() Math.min() Math.pow() Math.random() Math.round() Math.sign() Math.sin() Math.sinh() Math.sqrt() Math.tan() Math.tanh() [Translate] Math.trunc() \u7ee7\u627f Object \u5c5e\u6027 Object.prototype.__count__ [Translate] Object.prototype.__noSuchMethod__ [Translate] __parent__ __proto__ constructor \u65b9\u6cd5 Object.prototype.__defineGetter__() Object.prototype.__defineSetter__() Object.prototype.__lookupGetter__() Object.prototype.__lookupSetter__() [Translate] Object.prototype.hasOwnProperty() isPrototypeOf propertyIsEnumerable Object.prototype.toLocaleString() Object.toSource Object.prototype.toString() Object.prototype.unwatch() [Translate] Object.prototype.valueOf() watch"}, {"id": "Summary", "title": "\u6982\u8ff0"}, {"id": "Syntax", "title": "\u8bed\u6cd5"}, {"id": "Parameters", "title": "\u53c2\u6570"}, {"id": "Description", "title": "\u63cf\u8ff0"}, {"id": "Examples", "title": "\u793a\u4f8b"}, {"id": "Example:_Using_Math.acos", "title": "\u4f8b\u5b50\uff1a\u4f7f\u7528 Math.acos"}, {"id": ".E8.A7.84.E8.8C.83", "title": "\u89c4\u8303"}, {"id": ".E6.B5.8F.E8.A7.88.E5.99.A8.E5.85.BC.E5.AE.B9.E6.80.A7", "title": "\u6d4f\u89c8\u5668\u517c\u5bb9\u6027"}, {"id": "See_also", "title": "\u76f8\u5173\u94fe\u63a5"}], "id": 124313, "review_tags": []}