Differentials of Trigonometric Functions

woosh…

/me wonders what that was going over his head.

Ye gods… I wonder why I don’t remember that… ahh thats it, because its totaly useless to know and was replaced in my head by something more usefull, like where the last petrol station is on the way to the lowfield.

lol true but knowing the location of petrol stations wont get you an a level in maths

Pah, A Level Shmay level, can honestly say A level maths has done nothing for me, never used it since i got it.