### Description

Returns the inverse tangent of a value, in radians.

### Sample Usage

`ATAN(0)`

`ATAN(A5)`

`ATAN(1)`

### Syntax

`ATAN(value)`

`value`

- The value for which to calculate the inverse tangent.

### Notes

The `DEGREES`

function can be used to convert the result of `ATAN`

into degrees.

Because tangent is periodic, there are many solutions to the inverse. `ATAN`

returns the solution between -Pi/2 and Pi/2.

### By adding the values you would like to calculate, Excellentable generates the outcome:

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### See Also

`TANH`

: Returns the hyperbolic tangent of any real number.

`TAN`

: Returns the tangent of an angle provided in radians.

`SINH`

: Returns the hyperbolic sine of any real number.

`SIN`

: Returns the sine of an angle provided in radians.

`RADIANS`

: Converts an angle value in degrees to radians.

`PI`

: Returns the value of Pi to 14 decimal places.

`DEGREES`

: Converts an angle value in radians to degrees.

`COSH`

: Returns the hyperbolic cosine of any real number.

`COS`

: Returns the cosine of an angle provided in radians.

`ATANH`

: Returns the inverse hyperbolic tangent of a number.

`ATAN2`

: Returns the angle between the x-axis and a line segment from the origin (0,0) to specified coordinate pair (`x`,`y`), in radians.

`ASINH`

: Returns the inverse hyperbolic sine of a number.

`ASIN`

: Returns the inverse sine of a value, in radians.

`ACOSH`

: Returns the inverse hyperbolic cosine of a number.

`ACOS`

: Returns the inverse cosine of a value, in radians.