On one of the other boards I read, someone wanted to know how to find an inverse trigonometric function (specifically, arcsine). I didn''t really know (I could only come up with some half-assed answer involving LUTs and modulus stuff), and in trig class we were taught to "use the calculator" to find it (ugh!). So, does anyone know the real way to find values for inverse trig functions? (i.e, ArcSine(.5) -----> 30(deg)).

http://support.microsoft.com/support/kb/articles/Q28/2/49.ASP

I suggest you search on msdn.microsoft.com or VC++ help more... I found this in 2 minutes... Hope that helps.

There's a site called "Eric Weisstein's World of Mathematics"
http://mathworld.wolfram.com/

It has tons of info on math stuff.

Here's the page on ArcSine
http://mathworld.wolfram.com/InverseSine.html

Hope this is what you were looking for, this stuff looks way too complex for me.

I'll stick to the calculator

BTW, if you just wanted to know the functions there're:
asin, acos, and atan.

+AA_970+

Edited by - +AA_970+ on July 3, 2000 5:07:20 PM

I once asked my math teacher and he said something about the curviture of a fraction of pi in a wave!!!! But I do know this about arcsin=sin to the -1= {(x,y); x=sin y and -pi/2<=y<=pi/2}.
Well to be truelthful.. I don''t know that offhandedly I copied it out of a book (you might be able to tell). It says also that in terms of a 360 degree circle -pi/2=-90 and pi/2=90. I hope I have helped. Good luck and god''s speed.