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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:42:52 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:42:52 -0500
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+---
+title: Math.SQRT1_2
+slug: Web/JavaScript/Reference/Global_Objects/Math/SQRT1_2
+tags:
+ - JavaScript
+ - Math
+ - Property
+ - Propriedade
+ - Reference
+ - Referencia
+translation_of: Web/JavaScript/Reference/Global_Objects/Math/SQRT1_2
+---
+<div>{{JSRef}}</div>
+
+<p>A propriedade <code>Math.SQRT1_2</code> representa a raiz quadrada de <math><semantics><mfrac><mn>1</mn><mn>2</mn></mfrac><annotation encoding="TeX">\frac{1}{2}</annotation></semantics></math>, que é aproximadamente 0.707:</p>
+
+<p><math display="block"><semantics><mrow><mstyle mathvariant="monospace"><mi>Math.SQRT1_2</mi></mstyle><mo>=</mo><msqrt><mfrac><mn>1</mn><mn>2</mn></mfrac></msqrt><mo>=</mo><mfrac><mn>1</mn><msqrt><mn>2</mn></msqrt></mfrac><mo>≈</mo><mn>0.707</mn></mrow><annotation encoding="TeX">\mathtt{\mi{Math.SQRT1_2}} = \sqrt{\frac{1}{2}} = \frac{1}{\sqrt{2}} \approx 0.707</annotation></semantics></math></p>
+
+<div>{{js_property_attributes(0, 0, 0)}}</div>
+
+<h2 id="Descrição">Descrição</h2>
+
+<p>Por <code>SQRT1_2</code> ser um método estático de <code>Math</code>, deve-se sempre usá-lo como <code>Math.SQRT1_2()</code>, e não como um método de um objeto <code>Math</code> que você criou.</p>
+
+<h2 id="Exemplos">Exemplos</h2>
+
+<h3 id="Usando_Math.SQRT1_2">Usando <code>Math.SQRT1_2</code></h3>
+
+<p>A função a seguir retorna 1 sobre a raiz quadrada de 2:</p>
+
+<pre class="brush:js">function getRoot1_2() {
+ return Math.SQRT1_2;
+}
+
+getRoot1_2(); // 0.7071067811865476
+</pre>
+
+<h2 id="Especificações">Especificações</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Specification</th>
+ <th scope="col">Status</th>
+ <th scope="col">Comment</th>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES1')}}</td>
+ <td>{{Spec2('ES1')}}</td>
+ <td>Initial definition. Implemented in JavaScript 1.0.</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES5.1', '#sec-15.8.1.7', 'Math.SQRT1_2')}}</td>
+ <td>{{Spec2('ES5.1')}}</td>
+ <td> </td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES6', '#sec-math.sqrt1_2', 'Math.SQRT1_2')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td> </td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ESDraft', '#sec-math.sqrt1_2', 'Math.SQRT1_2')}}</td>
+ <td>{{Spec2('ESDraft')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Compatibilidade_nos_navegadores">Compatibilidade nos navegadores</h2>
+
+<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
+
+<p>{{Compat("javascript.builtins.Math.SQRT1_2")}}</p>
+
+<h2 id="Veja_também">Veja também</h2>
+
+<ul>
+ <li>{{jsxref("Math.pow()")}}</li>
+ <li>{{jsxref("Math.sqrt()")}}</li>
+</ul>