Here's the question you clicked on:
radh
State the amplitude, period, and phase shift of the function -3cos(3x+3 pi/2).
try the physics section! but from what i recall.... this is a standard sinusoidal wave function where the generic version looks like D(x)=Acos(wt+phase shift) or something close to it..... so the amplitude would be 3... and the phase shift would be 3pi/2.... but check and make sure that D(x) equation is exactly correct... bc its been awhile haha
physics?! woah, i'm in pre-cal. this is trig.
haha ok. well it looks very similar to a physics theorem, sorry about that...