33+ Tan Formula Graph. When the denominator of a fraction is 0, the fraction is undefined. Some interesting things happen to tangent's graph.
If we continue our table, we will get similar values (because this is a periodic graph).
Graphing the tangent function demonstrates how to graph the tangent function using the unit circle. Therefore sin(ø) = sin(360 + ø), for example. When the denominator of a fraction is 0, the fraction is undefined. Using the graph of this function, you can make the same type of transformation that applies to the parent graph of any function.