01- 2 21- +

02- / 22- 2

03- ENTER 23- /

04- ENTER 24- -

05- 4 25- 2

06- y^x 26- +

07- 12/ 27- ENTER

08- ENTER 28- *

09- ENTER 29- 2

10- 1 30- *

11- 4 31- 1

12- 0 32- -

13- / 33- ENTER

14- 1 34- ENTER

15- + 35- ENTER

16- * 36- *

17- x<>y 37- CHS

18- e^x 38- 1

19- ENTER 39- +

20- 1/x 40- SQRT

41- GTO 00Usage:

Enter angle in radians ( 0 <= x <= pi/2 )

R/S -> sin(x)

x<>y -> cos(x)

/ -> tan(x)

Examples:

x | sin(x) | cos(x) | tan(x) |

------+-------------+-------------+-------------+

1.57 | 0.999999683 | 0.000796323 | 1255.771443 |

1.50 | 0.997494987 | 0.070737199 | 14.10142048 |

1.00 | 0.841470987 | 0.540302303 | 1.557407736 |

0.50 | 0.479425537 | 0.877582563 | 0.546302487 |

0.00 | 0.000000000 | 1.000000000 | 0.000000000 |x |sin(x*pi/180)|cos(x*pi/180)|tan(x*pi/180)|

------+-------------+-------------+-------------+

90.0 | 1.000000000 |-0.000000003*|-294117647.1*|

89.9 | 0.999998477 | 0.001745329 | 572.9570052 |

60.0 | 0.866025403 | 0.500000001 | 1.732050803 |

45.0 | 0.707106783 | 0.707106779 | 1.000000006 |

30.0 | 0.500000001 | 0.866025403 | 0.577350271 |

*) wrong sign for cos(90 degrees);

invalid result for tan(90 degrees).pi/180 = 1.745329252e-02

Warnings: 1) not suitable for geodesic applications, space program, land surveying and other critical applications.

2) tan(89.999999) is a bit off: 62,500,000.00 :-)