> ## Documentation Index
> Fetch the complete documentation index at: https://docs.oxla.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Trigonometric Functions

These trigonometric functions in Oxla take arguments and return values of type `double precision` and `real`.

| **Function** | **Description**                                                                                  | **Syntax**                                                                    | **Example**                                                |
| ------------ | ------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------- | ---------------------------------------------------------- |
| `acos`       | It calculates the inverse cosine of a given argument, where the output is expressed in radians.  | `acos(argument)`                                                              | `select acos(1);` It will return: `0`                      |
| `acosd`      | It calculates the inverse cosine of a given argument, where the output is expressed in degrees.  | `acosd(argument)`                                                             | `select acosd(0.5);` It will return: `60`                  |
| `asin`       | It calculates the inverse sine of a given argument, where the output is expressed in radians.    | `asin(argument)`                                                              | `select asin(1);` It will return: `1.5707963267948966`     |
| `asind`      | It calculates the inverse sine of a given argument, where the output is expressed in degrees.    | `asind(argument)`                                                             | `select asind(0.5);` It will return: `30`                  |
| `atan`       | It calculates the inverse tangent of a given argument, where the output is expressed in radians. | `atan(argument)`                                                              | `select atan(1);` It will return: `0.7853965`              |
| `atand`      | It calculates the inverse tangent of a given argument, where the output is expressed in degrees. | `atand(argument)`                                                             | `select atand(1);` It will return: `44.99990469434657`     |
| `atan2`      | It calculates the inverse tangent of y/x, where the output is expressed in radians.              | `atan2(y_value, x_value)``y_value` & `x_value` are in double precision type.  | `select atan2(1, 0);` It will return: `1.5707963267948966` |
| `atan2d`     | It calculates the inverse tangent of y/x, where the output is expressed in degrees.              | `atan2d(y_value, x_value)``y_value` & `x_value` are in double precision type. | `select atan2d(1, 0);` It will return: `90`                |
| `cos`        | It calculates the cosine of a given argument, where the argument is in radians.                  | `cos(argument)`                                                               | `select cos(0);` It will return: `1`                       |
| `cosd`       | It calculates the cosine of a given argument, where the argument is in degrees.                  | `cosd(argument)`                                                              | `select cosd(60);` It will return: `0.5000000000000001`    |
| `cot`        | It calculates the cotangent of a given argument, where the argument is in radians.               | `cot(argument)`                                                               | `select cot(0.5);` It will return: `1.8304877`             |
| `cotd`       | It calculates the cotangent of a given argument, where the argument is in degrees.               | `cotd(argument)`                                                              | `select cotd(45);` It will return: `1.0000000000000002`    |
| `sin`        | It calculates the sine of a given argument, where the argument is in radians.                    | `sin(argument)`                                                               | `select sin(1);` It will return: `0.8414709848078965`      |
| `sind`       | It calculates the sine of a given argument, where the argument is in degrees.                    | `sind(argument)`                                                              | `select sind(30);` It will return: `0.49999999999999994`   |
| `tan`        | It calculates the tangent of a given argument, where the argument is in radians.                 | `tan(argument)`                                                               | `select tan(1);` It will return: `1.5574077246549023`      |
| `tand`       | It calculates the tangent of a given argument, where the argument is in degrees.                 | `tand(argument)`                                                              | `select tand(45);` It will return: `0.9999999999999999`    |