Pull out your scientific calculator, press "1" then "tan" then "X" then "24" then "=". You're answer should be .4189.
What this means is 1 degree, over a length of 24" will 'offset' .4189".
Said another way, a 24" tall tire, leaned over at .4189" would be at 1 degree of camber. Of course, the same method can be applied with suspension components, etc.
Use any number combinations you want and, if you're feeling frisky, learn to use the inverse function to calculate backwards.
Hope this helps.