HP-12C
01- 3 21- 1/x
02- / 22- +
03- ENTER 23- 2
04- ENTER 24- /
05- 4 25- -
06- y^x 26- ENTER
07- 12/ 27- ENTER
08- ENTER 28- *
09- ENTER 29- 4
10- * 30- *
11- 1 31- 3
12- 4 32- -
13- 0 33- *
14- / 34- ENTER
15- + 35- ENTER
16- 2 36- *
17- + 37- CHS
18- x<>y 38- 1
19- e^x 39- +
20- ENTER 40- SQRT
41- GTO 00
Usage:
Enter angle in radians ( 0 <= x <= pi )
R/S -> sin(x)
x<>y -> cos(x)
/ -> tan(x)
Examples:
x | sin(x) | cos(x) | tan(x) |
------+-------------+-------------+-------------+
3.14 | 0.001592545 |-0.999998732 |-0.001592547 |
3.02 | 0.121293236 |-0.992616719 |-0.122195439 |
2.50 | 0.598472141 |-0.801143618 |-0.747022290 |
2.00 | 0.909297427 |-0.416146836 |-2.185039869 |
1.65 | 0.996865028 |-0.079120890 |-12.59926467 |
1.58 | 0.999999647 |-0.009203545 |-108.6491891 |
1.57 | 0.999999683 | 0.000796324 | 1255.769712 |
1.50 | 0.997494987 | 0.070737197 | 14.10142097 |
1.00 | 0.841470986 | 0.540302303 | 1.557407735 |
0.50 | 0.479425548 | 0.877582557 | 0.546302504 |
0.05 | 0.049979231 | 0.998750257 | 0.050041770 |
0.00 | 0.000000000 | 1.000000000 | 0.000000000 |
x |sin(x*pi/180)|cos(x*pi/180)|tan(x*pi/180)|
------+-------------+-------------+-------------+
180.0 | 0.000000000 |-1.000000000 | 0.000000000 |
179.0 | 0.017452387 |-0.999847696 |-0.017455045 |
150.0 | 0.499999998 | 0.866025405 |-0.577350265 |
135.0 | 0.707106777 |-0.707106785 |-0.999999989 |
120.0 | 0.866025404 |-0.500000000 |-1.732050807 |
90.1 | 0.999998477 |-0.001745334 |-572.9552528 |
90.0 | 1.000000000 | 0.000000002 | 577350260.0*|
89.9 | 0.999998477 | 0.001745326 | 572.9581364 |
60.0 | 0.866025403 | 0.500000002 | 1.732050799 |
45.0 | 0.707106784 | 0.707106779 | 1.000000006 |
30.0 | 0.499999999 | 0.866025404 | 0.577350268 |
1.0 | 0.017452857 | 0.999847687 | 0.017455515 |
(*) tan(90°) = oo
pi = 3.141592654
Formulas:
cos(x) ~ x^4/12 + (x^4/12)^2/140 - cosh(x) + 2
sin(x) = sqrt(1 - (cos(x))^2)
cos(3*x) = cos(x)*(4*(cos(x))^2 - 3)
More details at Mardi Gras Basic Trigs (HP-12C).
HP 12c Platinum
001- 3 020- 1/x
002- / 021- +
003- ENTER 022- 2
004- ENTER 023- /
005- x^2 024- -
006- x^2 025- ENTER
007- 12/ 026- x^2
008- ENTER 027- 4
009- x^2 028- *
010- 1 029- 3
011- 4 030- -
012- 0 031- *
013- / 032- ENTER
014- + 033- x^2
015- 2 034- CHS
016- + 035- 1
017- x<>y 036- +
018- e^x 037- SQRT
019- ENTER 038- GTO 000
Examples:
x | sin(x) | cos(x) | tan(x) |
------+-------------+-------------+-------------+
3.14 | 0.001592628 |-0.999998732 |-0.001592630 |
3.02 | 0.121293239 |-0.992616719 |-0.122195442 |
2.50 | 0.598472143 |-0.801143617 |-0.747022294 |
2.00 | 0.909297427 |-0.416146837 |-2.185039863 |
1.65 | 0.996865028 |-0.079120889 |-12.59926479 |
1.58 | 0.999999646 |-0.009203543 |-108.6492026 |
1.57 | 0.999999683 | 0.000796327 | 1255.765641 |
1.50 | 0.997494987 | 0.070737202 | 14.10141994 |
1.00 | 0.841470985 | 0.540302306 | 1.557407725 |
0.50 | 0.479425539 | 0.877582562 | 0.546302490 |
0.05 | 0.049979169 | 0.998750260 | 0.050041708 |
0.00 | 0.000000000 | 1.000000000 | 0.000000000 |
x |sin(x*pi/180)|cos(x*pi/180)|tan(x*pi/180)|
------+-------------+-------------+-------------+
180.0 | 0.000000000 |-1.000000000 | 0.000000000 |
179.0 | 0.017452383 |-0.999847696 |-0.017455041 |
150.0 | 0.499999997 | 0.866025406 |-0.577350264 |
135.0 | 0.707106780 |-0.707106785 |-1.000000003 |
120.0 | 0.866025404 |-0.500000000 |-1.732050806 |
90.1 | 0.999998477 |-0.001745329 |-572.9571280 |
90.0 | 1.000000000 |-2.684678-10 |-3724840447* |
89.9 | 0.999998477 | 0.001745328 | 572.9572886 |
60.0 | 0.866025404 | 0.500000000 | 1.732050808 |
(*) tan(90°) = oo