# Function atan2

Computes the principal value of the arc tangent of y/x in radians

    atan2(y, x)

For matrices, the function is evaluated element wise.


### Parameters

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

### Returns

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




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