mathjs
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Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif
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# Function sec
Calculate the secant of a value, defined as `sec(x) = 1/cos(x)`.
For matrices, the function is evaluated element wise.
## Syntax
```js
math.sec(x)
```
### Parameters
Parameter | Type | Description
--------- | ---- | -----------
`x` | number | Complex | Unit | Array | Matrix | Function input
### Returns
Type | Description
---- | -----------
number | Complex | Array | Matrix | Secant of x
## Examples
```js
math.sec(2) // returns number -2.4029979617223822
1 / math.cos(2) // returns number -2.4029979617223822
```
## See also
[cos](cos.md),
[csc](csc.md),
[cot](cot.md)