Index
 
  Reference for Wiring 1.0 (ALPHA) 0020+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.
Name  

HALF_PI (1.57079...)

   
Examples   






	


	

		Description
		 
	
	
HALF_PI is a mathematical constant with the value 1.57079632679489661923. It is half the ratio of the circumference of a circle to its diameter. It is useful in combination with the trigonometric functions sin() and cos(). 	

           
 
            
             
             
          


	

		Syntax
		 
	
	

HALF_PI

	

           
 
            
             
             
          


	

		Usage
		 
	
	
Application	

           
 
            
             
             
          


	

		Related
		 
	
	
PI
TWO_PI