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
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content copyright, © 2011-2018. Edward
Shore. Unauthorized use and/or
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