Excellent Ticbol! I guess I never read the question carefully enough. I have one problem though
Quote:
Originally Posted by ticbol  The general cosine equation is
y = A*cos(Bx -C) +D
where
A = amplitude----------------------------5m here
B = frequency; such that Period = 2Pi /B
C = horizontal shift
D = vertical shift
shift = relocation of the neutral axis from the x- or y-axis. |
usually, the general equation is written as y = A*cos B(x - C) + D. here C is the horizontal shift. as you have it in your equation, C/B is the horizontal shift.
it didn't affect the answer here though, since C = 0, but it might in some other question. (or i don't know, maybe in practice it won't make much of a difference, since the value of C may be altered by the way you set up the equation or something)
Good Job though!
