Okay, here it is. A very simple concept that can pay off
big and save you a lot of time in looking for your six
dollar scientific calculator.
(that's supposed to be a joke :-)
Here is a tiny program that you can set up to run in a batch
file or by memory when you startup GW-BASIC for machine shop
purposes or for trig problems. The program is called
STARTUP.BAS and it goes like this:
If you are home alone, and aren't using a batch file the
command from the prompt goes something like this:
gwbasic[.exe] startup[.bas] (bracket content optional)
let me make that cleaner sans brackets:
gwbasic startup
that's it.
here is what the program looks like:
1 cls
2 key off
3 locate ,,,0,7
4 pi=4*atn(1)
5 r2d=pi/180
6 print tab(10) "The Value of PI=";pi
7 print tab(10) "The value of the radians to degrees factor is:"
8 print tab(10) "PI/180=";r2d
9 print "So to find the sine of 45 degrees for example"
10 print "enter the question mark for the shorthand version"
11 print "of print & then: sin(45*r2d) this will give"
12 print "you the value of the sine of 45 degrees in degrees"
13 print "and not value in radians."
14 ' save"startup.bas", A
15 ' system
After a while, you can just delete all the blab if you want
from lines 6 to 13 and just keep it simple to just
establish the value of the conversion factor contained in
the variable "r2d"
That's it! all first five lines, and lines 14 & 15 if you
want.
If you wanna show off you can get the startup program down
to just 1 to 3 lines if you want.
1 cls:key off:locate,,,0,7:pi=4*atn(1):r2d=pi/180
2 save"startup.bas",a:' system
All you are doing is just creating the value for PI and a
conversion factor called (r2d) "radians to degrees" to
translate the radian return for trig functions in gw-basic
to degrees.
Other semi-automatic math thingys can be done too if the
need be.
But for Joseph_Sixpacks who just crank handles, all you
mostly need is the trig stuff and simple multiplication and
addition, maybe even subtraction.
But beware, Compound trig was yet another headache for
machinists in the last century. M.O.W. (measurement over
wires) for threads probably is okay in basic too,
Come to think of it, see your machinist's handbook for more
confusion.