Section 3: Functions37
Keys Function Input Value(s) Result(s)
       
fCOS  Cosine Angle   Cosine (x) in X
f-1COS  Arc cosine x not be greater than 1 or less than –1 (|x| ≤ 1) Principal value of arc cosine (x) in X
(0° ≤ result ≤ 180°)    
fSIN Sine Angle   Sine (x) in X
f-1SIN Arc sine x not be greater than 1 or less than –1 (|x| ≤ 1) Principal value of arc sine (x) in X
(90° ≤ result ≤ 90°)    
fTAN Tangent Angle   Tangent (x) in X
f-1TAN Arc tangent Unrestricted x Principal value of arc tangent (x) in X
(90° ≤ result ≤ +90°)    
fR P Convert rectangular coordinates (x,y) to polar form (r, θ) x, y in X, Y r, θ   in X, Y
f-1R P Convert polar coordinates (r, θ) to rectangular form (x, y) r, θ in X, Y x, y in X, Y. (Program halt on underflow in X.)
f D.MS Convert decimal angle to DDDDD.MMSS format       Decimal angle       DDDDD.MMSS in X
f-1 D.MS Convert DDDDD.MMSS format       angle to decimal format DDDDD.MMSS Decimal angle         in X
fD.MS+ Add (Y+x) in DDDDD.MMSS format      
y: DDDDD.MMSS        
x:
DDDDD.MMSS in X (Sum)      
f-1D.MS+ Subtract (Y–x) in DDDDD.MMSS format      
y: DDDDD.MMSS        
x:
DDDDD.MMSS in X (Difference)      
       
   Decimal angle in prevailing angular mode.
     Or equivalent in grads or radians.
       DDDDD.MMSS format. D = degrees, MM = minutes, SS = seconds.
         Magnitude of angle should not exceed 99999.99999 decimal degrees (or equivalent in radians or grads) or 99999.59599 in DDDDD.MMSS format.
Figure 3-1. Functions Involving Angles