Hi! I'm having a bit of trouble figuring out the equations for this graph.

The graph increases from left to right, so I assumed it a tangent graph. We need to find 2 equations for this graph.

I found the tangent equation but I'm not sure if I did it the right way: first I found the vertical displacement and the phase shift that are pretty obvious on the graph, then since a tangent graph's period is pi not 2pi like that of cosine and sine graphs, and the period on this graph is 2pi, the frequency (or B) is 1/2

Then it seems like the graph has been vertically compressed, so I found a point on the graph (8pi/9,0) and solved for the amplitude (A)

my tangent equation is y=0.24tan((x+0.25pi)/2)+1

I did the same thing for the cotangent graph, but then the cotangent graph is a mirror image of the tangent graph and I can't use reflections since the graph doesn't reflect off the y-axis. So now I'm stuck with only one equation, any idea how I can find the second equation?

Thanks lots!