Radio Shack TRS-80 PC-3 Owner's Manual page 125

1 DEGREE
Abbreviations: DE., DEG., DEGR., DEGRE.
See also: GRAD and RADIAN
Purpose
The DEG REE verb is used to change the form of angular values to decimal degrees.
Use
The PC-3 Computer has three forms for representing angular values - decimal degrees, radians, and gradient. These forms are used
in specifying the arguments to the SIN, COS, and TAN functions, and in returning the results from the ASN, ACS, and ATN
functions.
The DEGREE function changes the form for all angular values to decimal-degree form until a GRAD or RADIAN verb is used.
The DMS and DEG functions can be used to convert decimal degrees to degree, minute, second form and vice versa.
Examples
11;1 DEGREE
21;1 X
=
ASN 1
X now has a value of 90, i.e., 90 degrees, the Arcsine of 1.
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