The secant and cosecant graphs satisfy the following properties: range: (− ∞, − 1] ∪ [1, ∞) (-\infty, -1] \cup [1, \infty) (− ∞, − 1] ∪ [1, ∞) period: 2 π. 2\pi. 2 π. From the graphs of the secant and cosecant functions, we see that secant is an even

Example 2.2. 1: Graphing a Variation of the Secant Function Graph one period of f ( x) = 2.5 sec ( 0.4 x). Solution Step 1. Sketch a graph of the function f ( x) = 2.5 cos ( 0.4 x). A = 2.5 so the stretching factor is 2.5. B = 0.4