HP 12C Platinum: Cosine of an Angle
Introduction
This is a fairly short program of an angle. The angle is in radians. This is adapted from the TI-84 Plus COSRAD
program from the book Inside Your Calculator (see Source section below).
HP 12C Platinum Program: Cosine of an Angle
The angle is entered in radians. This program can be adopted for the regular
HP 12C.
|
Step
|
Key Code
|
Key
|
Comment
|
|
001
|
44, 0
|
STO 0
|
Begin program
|
|
002
|
2
|
2
|
|
|
003
|
21
|
y^x
|
You could use x^2 on the Platinum
|
|
004
|
4
|
4
|
|
|
005
|
2
|
2
|
|
|
006
|
9
|
9
|
|
|
007
|
4
|
4
|
|
|
008
|
9
|
9
|
|
|
009
|
6
|
6
|
|
|
010
|
7
|
7
|
|
|
011
|
2
|
2
|
|
|
012
|
9
|
9
|
|
|
013
|
6
|
6
|
|
|
014
|
10
|
÷
|
|
|
015
|
44, 1
|
STO 1
|
|
|
016
|
1
|
1
|
Set counter
|
|
017
|
6
|
6
|
|
|
018
|
44, 2
|
STO 2
|
|
|
019
|
4
|
4
|
Loop begins
|
|
020
|
45, 1
|
RCL 1
|
|
|
021
|
30
|
-
|
|
|
022
|
45, 1
|
RCL 1
|
|
|
023
|
20
|
*
|
|
|
024
|
44, 1
|
STO 1
|
|
|
025
|
1
|
1
|
|
|
026
|
44, 30, 2
|
STO- 2
|
Decrease counter
|
|
027
|
45, 2
|
RCL 2
|
|
|
028
|
43, 35
|
x=0
|
|
|
029
|
43, 33, 031
|
GTO 031
|
|
|
030
|
43, 33, 019
|
GTO 019
|
|
|
031
|
1
|
1
|
|
|
032
|
45, 1
|
RCL 1
|
|
|
033
|
2
|
2
|
|
|
034
|
10
|
÷
|
|
|
035
|
30
|
-
|
|
|
036
|
43, 33, 000
|
GTO 000
|
|
Examples (FIX 6 setting):
cos 0.445 ≈ 0.902611
cos 2 ≈ -0.416147
cos -4.180 ≈ -0.507593
cos π/6 ≈ cos 0.523599 ≈ 0.866025
Source:
Gerald R. Rising. Inside
Your Calculator: From Simple Programs to
Significant Insights Wiley-Interscience,
John Wiley & Sons, Inc: Hoboken, New Jersey. 2007. ISBN 978-0-470-11401-8
Eddie
All original
content copyright, © 2011-2018. Edward
Shore. Unauthorized use and/or
unauthorized distribution for commercial purposes without express and written
permission from the author is strictly prohibited. This blog entry may be distributed for
noncommercial purposes, provided that full credit is given to the author. Please contact the author if you have
questions.