Section 6: Functions92
Keystrokes Display    
USER 
– 0.0000    
   
5.43
– 5.43 _    
  The HP-41C is still in DEG mode.
g HR ( ex )
– 5.7167    
   
12.18
– 12.18 _    
   
g HR ( ex )
– 12.3000    
   
 –  
– 6.5833    
   
COS 
– 0.9934    
   
15.55
– 15.55 _    
   
g HR ( ex )
– 15.9167    
   
STO 01
– 15.9167    
   
COS 
– 0.9617    
   
 ×  
– 0.9553    
   
37.03
– 37.03 _    
   
g HR ( ex )
– 37.0500    
   
STO 00
– 37.0500    
   
COS 
– 0.7981    
   
 ×  
– 0.7625    
   
RCL 00 SIN 
– 0.6025    
   
RCL 01 SIN 
– 0.2742    
   
 ×  
– 0.1652    
   
 +  
– 0.9277    
   
g COS–1 
– 21.9235    
   
60  ×  
– 1315.4110    
  Distance in nautical miles that Odysseus must sail to visit Penelope.
USER 
– 1315.4110    
   
g CLX 
– 0.0000    
   
Polar/Rectangular Coordinate Conversions
Two functions are provided in the HP-41C for polar/rectangular coordinate conversions. Angle θ is assumed to be in decimal degrees, radians, or grads, depending upon the trigonometric mode first selected by the DEG , RAD , or GRAD functions.