Trigonometry is confusing.

I'm using iNfraNe's particle system, and I want to figure out how high I need my Z speed to be if I want the projectile to arc to the targeted position when there's a gravity vector.

So I asked someone and they told me to use sine and cosine but I'm like "okay, wtf?".
Sine = opposite/hypotenuse, Cosine = adjacent/hypotenuse, Tangent = opposite/adjacent
But how the heck do I use them?

So if anyone can enlighten me here, please do.

http://en.wikipedia.org/wiki/Trigonometry

Someone else can explain it themselves if they want :). Wikipedia is good for this sort of stuff though.

Z speed = 2 pi f A cos (2 pi f t)

f = frequency

t = time

A = amplitude

In radians, of course.

and frequency time and amplitude would be...

:p

one question... in which grade are you?? have you seen any physics in your school?? we need to know that in order to figure it out how to help you.

9th and no :(
Our half-ass math teacher tried to explain this in four minutes.

this is why u need to use my system, since it intergrated all the simple functions to arc projectiles to a position... and much more :P

That was uncalled for...

but ill try it anyway :P

Edit: Nice, but I'm sticking with iNfraNe's because the other one is missing some things, like the projectiles rotate on 2 axes. But I will see what you did in yours. (Also I noticed you misspelled Acceleration)

^^ the rotation is simple so i didnt add it as a part of the system. But i will prolly add it later. And yes i did mispell it, maybe i will rename it sometime :P

It's funny that people still prefer my system :)

We trust our moderators.

People who don't know math

noooo :P

Wtf I know math... I can count all the way to purple backwards!