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# quaternion\_trigonometric methods  
The following methods are all part of the **quaternion\_trigonometric methods**\.  
Provides trigonometric functions for quaternion types\.  
## Table of contents  
  
* [**angle** function](#angle-function)  
* [**angleAxis** function](#angleaxis-function)  
* [**axis** function](#axis-function)  
  
### angle\(\) function  
#### <code>glm.<code>**angle**(**x**: *quat*) -\> *float*</code></code>  
&emsp;&emsp;Returns the quaternion rotation angle\.  
  
### angleAxis\(\) function  
#### <code>glm.<code>**angleAxis**(**angle**: *float*, **axis**: *vec3*) -\> *quat*</code></code>  
&emsp;&emsp;Build a quaternion from an angle and a normalized axis\.  
  
### axis\(\) function  
#### <code>glm.<code>**axis**(**x**: *quat*) -\> *vec3*</code></code>  
&emsp;&emsp;Returns the ``` q ``` rotation axis\.  
  
