sine and cosine

Mattizme · Post by **Mattizme** » Wed Feb 25, 2004 8:45 pm

Just a quick question today - does anyone know the header file in C that contains sine and cosine? I have a feeling that it's math.h, but I'm not sure.

Anyone care to enlighten me?

Post by **Magicfinger** » Wed Feb 25, 2004 9:17 pm

yep math.h will do it and sin, tan, hsin, hcos, htan, asin, acos, atan, atan2, etc...

Mattizme · Post by **Mattizme** » Thu Feb 26, 2004 5:25 pm

Tanks.

Camouflaged ones. Lots of netting.

Ephialtes · Post by **Ephialtes** » Tue Mar 23, 2004 5:50 pm

Oh no! C++ involves all that sin/cos/tan stuff? I hate that :S

Post by **Mit** » Tue Mar 23, 2004 5:58 pm

pretty much any graphics programming (in any language) will involve knowing about sin & cos (and vectors, matrices and trigonometry in general)

Ephialtes · Post by **Ephialtes** » Tue Mar 23, 2004 6:00 pm

We are doing that at the moment

Post by **Magicfinger** » Thu Mar 25, 2004 12:37 pm

well if you want to do anything with 3d games wether it be modelling, programming or even modding learn it well coz ur gonna need it

Mattizme · Post by **Mattizme** » Thu Mar 25, 2004 6:34 pm

heh, I learnt an interesting fact the other day - sin x / cos x = tan x

Post by **Mit** » Sun Apr 04, 2004 9:29 am

particularly handy for 2d stuff is..

angle = asin(y/h)
angle = acos(x/h)
angle = atan(y/x)

etc.
Particularly handy as you'll often get in situations where u have the x,y coords or speeds of objects that you need to find the angle between.
Ya have to be careful with those tho, as there are special cases you need to take into account (like when the x in atan(y/x) is 0) and often you cannot get useful information from those equations without first knowing the relative positions of the objects involved.

hedgehog · Post by **hedgehog** » Sun Apr 04, 2004 10:37 am

yeah i know all about that stuff.

cosign is what you have to get from your parents when you're 19 and trying to get into a new apartment.

atan is what you get on the beach

asin is making a joke this lame.