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双曲函数不是三角函数

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依云 2017-07-10 16:07:28 +08:00 committed by lilydjwg
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@ -604,9 +604,9 @@ Math.log2 = Math.log2 || function(x) {
};
```
### 三角函数方法
### 双曲函数方法
ES6新增了6个三角函数方法。
ES6新增了6个双曲函数方法。
- `Math.sinh(x)` 返回`x`的双曲正弦（hyperbolic sine）
- `Math.cosh(x)` 返回`x`的双曲余弦（hyperbolic cosine）