The following figure shows the effect of graphing tangent equation and cotangent equation. The equations of the curves in the graph are y=tan(x) (blue) and y=ctan(x) (red).

The following figure shows the effect of graphing secant equation and cosecant equation. The equations of the curves in the graph are y=sec(x) (blue) and y=csec(x) (red).

The following figure shows the effect of graphing inverse sine equation and inverse cosine equation. The equations of the curves in the graph are y=asin(x) (blue) and y=acos(x) (red).

 

Graphing Calculator -> Function Grapher -> Graphing Equations->Graphing Trigonometric Equation