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---
title: Math.tan()
slug: Web/JavaScript/Reference/Global_Objects/Math/tan
tags:
- 레퍼런스
- 메소드
- 수학
- 자바스크립트
translation_of: Web/JavaScript/Reference/Global_Objects/Math/tan
---
<div>{{JSRef}}</div>
<p><strong><code>Math.tan()</code></strong> 함수는 탄젠트 값을 반환합니다</p>
<div>{{EmbedInteractiveExample("pages/js/math-tan.html")}}</div>
<h2 id="신텍스">신텍스</h2>
<pre class="syntaxbox"><code>Math.tan(<var>x</var>)</code></pre>
<h3 id="Parameters">Parameters</h3>
<dl>
<dt><code>x</code></dt>
<dd>라디안 각도 </dd>
</dl>
<h3 id="반환_값">반환 값</h3>
<p>주어진 수의 탄젠트 값</p>
<h2 id="설명">설명</h2>
<p><code>Math.tan()</code> 메소드는 각도의 탄젠트 값을 수로 반환합니다.</p>
<p><code>tan()</code>은 <code>Math</code>의 정적 메서드이므로 사용자가 만든 <code>Math</code> 객체의 메서드가 아닌 항상 <code>Math.tan()</code>으로 사용합니다 (<code>Math</code> 는 생성자가 아닙니다).</p>
<h2 id="예">예</h2>
<h3 id="Using_Math.tan()">Using <code>Math.tan()</code></h3>
<pre class="brush: js">Math.tan(1); // 1.5574077246549023
</pre>
<p><code>Math.tan()</code>함수는 라디안 값으로 받지만 각도로 작업하는 것이 더 쉽기 때문에 다음 함수는 각도로 값을 받아서 라디안으로 변환하고 탄젠트를 반환합니다.</p>
<pre class="brush: js">function getTanDeg(deg) {
var rad = deg * Math.PI/180;
return Math.tan(rad);
}
</pre>
<h2 id="Specifications">Specifications</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-15.8.2.18', 'Math.tan')}}</td>
<td>{{Spec2('ES5.1')}}</td>
<td> </td>
</tr>
<tr>
<td>{{SpecName('ES6', '#sec-math.tan', 'Math.tan')}}</td>
<td>{{Spec2('ES6')}}</td>
<td> </td>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-math.tan', 'Math.tan')}}</td>
<td>{{Spec2('ESDraft')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="브라우저_호환성">브라우저 호환성</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.tan")}}</p>
<h2 id="함께_보기">함께 보기</h2>
<ul>
<li>{{jsxref("Math.acos()")}}</li>
<li>{{jsxref("Math.asin()")}}</li>
<li>{{jsxref("Math.atan()")}}</li>
<li>{{jsxref("Math.atan2()")}}</li>
<li>{{jsxref("Math.cos()")}}</li>
<li>{{jsxref("Math.sin()")}}</li>
</ul>
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