Tangent & Cotamgent:
A "normal" Tangent graph will go uphill because of the unit circle ratio: y/x. In Tangent's case, the x is what affects the placement of the graph and it's asymptotes. For a Cotangent graph, it also follows the unit circle ratio of x/y. However, for a Cotangent graph the y value affects the shifts of the graph causing it to to go downhill. The asymptote placement is the only factor that determines the direction of the graph. A normal tangent graph is uphill and a normal cotangent graph is downhill. The asymptotes for the graphs are in the same place, however cotangent has shifts.
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