# Function sec

Calculate the secant of a value, sec(x) = 1/cos(x)

    sec(x)

For matrices, the function is evaluated element wise.


### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`x` | Number | Boolean | Complex | Unit | Array | Matrix | 

### Returns

Type | Description
---- | -----------
Number | Complex | Array | Matrix | res




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