The Museum of HP Calculators


Spherical Triangles for the HP-41C/CV/CX

This program is Copyright © HP and is used here by permission. It was originally printed in the HP-67 Math Pac 1. This program was ported to the HP-41C by reading with the HP-41C card reader and the card reader may be required for operation of this program. This program was entered and uploaded by Tony Duell.

This program is supplied without representation or warranty of any kind. Tony Duell, Hewlett Packard and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.

Documentation Information (CD or source code)
How to get this Program to your Calculator (via HP-IL, disk, wand, and fingers)
Download Binary (.raw) program for disk or PC HP-IL Card download
Download Hexadecimal (.dat) program for Serial Port download

Program Listing

LINE  KEYS
 01 LBL "SPTR67"
 02 LBL 14
 03 LBL E
 04 SF 01
 05 LBL 11
 06 LBL B
 07 STO 21
 08 RDN
 09 STO 22
 10 RDN
 11 STO 20
 12 RCL 22
 13 COS
 14 RCL 20
 15 SIN
 16 *
 17 RCL 21
 18 SIN
 19 *
 20 RCL 20
 21 COS
 22 RCL 21
 23 COS
 24 *
 25 FS? 01
 26 CHS
 27 +
 28 ACOS
 29 STO 22
 30 GTO 00
 31 LBL 13
 32 LBL D
 33 SF 01
 34 LBL 10
 35 LBL A
 36 STO 22
 37 RDN
 38 STO 21
 39 RDN
 40 STO 20
 41 LBL 00
 42 XEQ 16
 43 STO 24
 44 XEQ 16
 45 STO 25
 46 XEQ 16
 47 STO 23
 48 CF 01
 49 LBL 09
 50 RCL 20
 51 XEQ 08
 52 RCL 23
 53 XEQ 08
 54 RCL 21
 55 XEQ 08
 56 RCL 24
 57 XEQ 08
 58 RCL 22
 59 XEQ 08
 60 RCL 25
 61 XEQ 08
 62 FS? 00
 63 ADV
 64 RTN
 65 LBL 16
 66 LBL b
 67 RCL 20
 68 RCL 21
 69 STO 20
 70 RCL 22
 71 STO 21
 72 RDN
 73 RDN
 74 STO 22
 75 COS
 76 RCL 20
 77 COS
 78 RCL 21
 79 COS
 80 *
 81 FS? 01
 82 CHS
 83 -
 84 RCL 20
 85 SIN
 86 /
 87 RCL 21
 88 SIN
 89 /
 90 ACOS
 91 RTN
 92 LBL 08
 93 FS? 00
 94 7PRTX
 95 FS? 00
 96 RTN
 97 STOP
 98 RTN
 99 LBL 15
100 LBL a
101 SF 01
102 LBL 12
103 LBL C
104 STO 24
105 RDN
106 STO 21
107 SIN
108 X<>Y
109 STO 20
110 SIN
111 /
112 RCL 24
113 SIN
114 *
115 ASIN
116 XEQ 18
117 RCL 20
118 RCL 21
119 X>Y?
120 GTO 00
121 CLX
122 RTN
123 LBL 00
124 RCL 25
125 COS
126 CHS
127 ACOS
128 LBL 18
129 LBL d
130 STO 25
131 RCL 24
132 +
133 2
134 /
135 ENTER
136 SIN
137 X<>Y
138 RCL 25
139 -
140 SIN
141 /
142 RCL 20
143 RCL 21
144 -
145 2
146 /
147 TAN
148 *
149 FS? 01
150 1/X
151 ATAN
152 ENTER
153 +
154 STO 22
155 COS
156 RCL 20
157 COS
158 RCL 21
159 COS
160 *
161 FS? 01
162 CHS
163 -
164 RCL 20
165 SIN
166 /
167 RCL 21
168 SIN
169 /
170 ACOS
171 STO 23
172 XEQ 09
173 CLX
174 RTN
175 LBL 19
176 LBL e
177 FS? 00
178 GTO 00
179 SF 00
180 1
181 RTN
182 LBL 00
183 CF 00
184 0
185 RTN
186 STOP
187 END

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