Radio Shack TRS-80 PC-3 Owner's Manual page 138

1 GRAD
Abbreviations: GR., GRA.
See also: DEGREE and RADIAN
Purpose
The GRAD verb is used to change the form of angular values to gradient form.
Use
The PC-3 Pocket Computer has three forms for representing angular values - decimal degrees, radians, and gradient. These forms
are used in specifying the arguments to the SI N, COS, and TAN functions and in returning the rusults from the ASN, ACS, and
ATN functions.
The GRAD function changes the form for all angular values to gradient form until a DEGREE or RADIAN verb is used. Gradient
form represents angular measurement in terms of percent gradient, i.e., a 45° angle is a 50% gradient.
Examples
10
GRAD
20 X
=
ASN 1 X now has a value of 100, i.e., a 100% gradient, the Arcsine of 1.
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