HP 48g Graphing Calculator - Manual (Page 149)

Real Number Functions
Some functions can only use real numbers as arguments. Among these
are angle conversions, percentages, and several functions that round,
truncate, or extract parts of real numbers.
Angle Conversion Functions
Two commands in the MTH REAL menu convert values between
decimal degrees and radians. Two other commands in the TIME
menu let you do degrees-minutes-seconds calculations using
hours-minutes-seconds (HMS) format.
In Degrees mode, angle arguments and results use decimal degrees.
Angle Conversion Functions
Key Programmable
Command
Description
fMThTl REAL ÎN>cn iNXT):
Ù R
R->D
Prefix. Degrees to radians. Converts a
number from a decimal degree value to
its radian equivalent.
Prefix. Radians to degrees. Converts a
number from a radian value to its
decimal degree equivalent.
f#^(TIME)fNXT ):
H. j-j |v| C;
H M
H M ;E: -
-eHMS
HMS^
HMS-f
HMS-
Decimal to HMS. Converts a number
from decimal degrees to HMS format.
HMS to decimal. Converts a number
from HMS format to decimal degrees.
Adds two angles in HMS format.
Subtracts two angles in HMS format.
12
Functions of Real and Complex Numbers 12-7