Radio Shack TRS-80 PC-3 Owner's Manual page 253

KEY OPERATION SEQUENCE
(when 1 point on the line and 1 direction angle are known)
Step No. Key Input Display Remarks
1
Cilll®
X0 =_
2 50
(ENTER)
Y0 =_
3 50
(ENTER) R=_
4 50
(ENTER)
X1 =_
5
-50 (ENTER) Y1 =_
6 0
(ENTER)
A=
7 45
(ENTER)
P:
0.0000 49.9999
(x
p • Ypl
8 (ENTER)
Q: 50.0000 100.0000
{x
q • Yql
258