Quote Originally Posted by matsp View Post
I was never particularly great at math in School, and whilst I can add small numbers up, or calculate the VAT (used to be 17.5%) by using "10% and half therof, and half again" is probably more down to having to do that all the time when programming, rather than having an innate ability for math.

Of course, being able to figure out how to go from two X,Y coordinate to an angle and back again will certainly help in 3D graphics, even if you don't need it in 2D graphics.

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Mats
Adding tax in is fairly easy - "FinalCost = BaseCost * (1+TaxRate)" is how - TaxRate is converted to decimal form. Thus, for 17.5%, you'd multiply the base cost by 1.175 to get it.

How about finding how to go from two X, Y, and Z positions instead of just X and Y? How about finding this angle (pan and tilt)?

I believe that everything in the universe is numerical in some form or another and since it is, there are mathematical rules that can be applied to pretty much anything.