study/uTools-Manuals
1
0
Fork 0
mirror of https://github.com/fofolee/uTools-Manuals.git synced 2025-12-20 18:45:52 +08:00
Code Issues Packages Projects Releases Wiki Activity

语法高亮，滚动条美化，设置页面调整

Browse Source
This commit is contained in:
fofolee
2019-04-19 02:41:09 +08:00
parent 1e8f76c000
commit 359d29ee0b
1590 changed files with 12328 additions and 11441 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
docs/javascript/Reference/Global_Objects/Math/acos.html
View File

@@ -5,7 +5,7 @@
<p><code><strong>Math.acos()</strong></code> 返回一个数的反余弦值（单位为弧度），即：</p>
<p><math display="block"><semantics><mrow><mo>∀</mo><mi>x</mi><mo>∊</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"></mspace><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> the unique </mtext><mspace width="thickmathspace"></mspace><mi>y</mi><mo>∊</mo><mo stretchy="false">[</mo><mn>0</mn><mo>;</mo><mi>π</mi><mo stretchy="false">]</mo><mspace width="thinmathspace"></mspace><mtext>such that</mtext><mspace width="thickmathspace"></mspace><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></p>
<h2 id="Syntax" name="Syntax">语法</h2>
<pre class="syntaxbox">Math.acos(<em>x</em>) </pre>
<pre><code class="language-javascript">Math.acos(<em>x</em>) </code></pre>
<h2 id="Parameters" name="Parameters">参数</h2>
<dl>
<dt>
@@ -18,13 +18,13 @@
<p>由于 <code>acos</code> 是 <code>Math</code> 的静态方法，所以应该像这样使用：<code>Math.acos()</code>，而不是作为你创建的 <code>Math</code> 实例的属性（<code>Math</code> 不是一个构造函数）。</p>
<h2 id="Examples" name="Examples">示例</h2>
<h3 id="Example:_Using_Math.acos" name="Example:_Using_Math.acos">例子：使用 <code>Math.acos</code></h3>
<pre class="brush:js">Math.acos(-2); // NaN
<pre><code class="language-js">Math.acos(-2); // NaN
Math.acos(-1); // 3.141592653589793
Math.acos(0); // 1.5707963267948966
Math.acos(0.5); // 1.0471975511965979
Math.acos(1); // 0
Math.acos(2); // NaN
</pre>
</code></pre>
<p>对于小于 -1 或大于 1 的值，<code>Math.acos</code> 返回 <code>NaN</code>。</p>
<h2 id="规范">规范</h2>
<table class="standard-table">