00:01
Again, this here, we're going to find the equation for the sign graph, and then we're going to do it for cosine.
00:07
So sign graphs start at the midline, which appears as if this here is the midline.
00:13
Because the distance from here to here, and the distance from here to here is equal, and instead of it's equal to 2.
00:19
So we're trying to write it where it's y is equal to a times sine of vx minus b plus b.
00:27
Now, you might use some different letters, but that's the same idea.
00:30
So the a value is the distance from the maximum to the midline there.
00:35
So that's the value of two.
00:37
Then we have sign of.
00:39
So now i'm taking a look at the distance from here to here to get one full period.
00:43
So from pi over two to four pi or two, that this is a four pi over two, which is equal to two pi.
00:49
So what that is telling me is that we don't have a b value...
