Radio Shack TRS-80 PC-3 Owner's Manual page 176

LOG 1(J(J
+
1(J0 will be interpreted as:
(LOG
1IJIJ) + 1IJIJ
not
LOG
(1IJIJ
+
1IJIJ).
If the same function is to be used two or more times in succession, parentheses must be used:
LOG (LOG 1(0) not LOG LOG
1IJIJ
1 ABS numeric expression
ASS is a numeric function which returns the absolute value of the numeric argument. The absolute value is the value of a number
without regard to its sign. ASS
-1IJ
is
1IJ.
1 ACS numeric expression
ACS is a numeric function which returns the arccosine of the numeric argument. The arccosine is the angle whose cosine is equal to
the expression. The value returned depends on whether the PC-3 Computer is in decimal degree, radian, or gradient mode for
angles. ACS.5 is
6IJ
in the decimal degree mode.
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