## IMARGUMENT Function

The `IMARGUMENT`

function in Google Sheets calculates the argument (or angle) of a complex number in radians.

### Syntax

```
IMARGUMENT(number)
```

`number`

: The complex number whose argument you want to calculate. This is a required parameter.

### Examples

**Argument of a Complex Number**

Calculate the argument of the complex number ‘3+4i’:

```
=IMARGUMENT("3+4i")
```

This will output approximately 0.9273 radians.

**Argument of a Purely Imaginary Number**

Calculate the argument of the complex number ‘0+5i’:

```
=IMARGUMENT("0+5i")
```

This will output approximately 1.5708 radians.

**Argument of a Real Number**

Calculate the argument of the number ‘7’:

```
=IMARGUMENT("7")
```

This will output 0 radians.

### Notes

- The IMARGUMENT function returns the angle in radians between the positive x-axis and the line representing the complex number in the complex plane.
- The function returns an error if the input is not a valid complex number.