Chapter 4 - Section 4.1 - Basic Graphs - 4.1 Problem Set - Page 192: 19

$See$ $table$ $of$ $values$ $below$ $for$ $y$ $=$ $\cos x$ $between$ $x = -4\pi$ $and$ $x = 4\pi$: $x = -4\pi$ ; $y = 1$ $x = -3\pi$ ; $y = -1$ $x = -2\pi$ ; $y = 1$ $x = -\pi$ ; $y = -1$ $x = 0$ ; $y = 1$ $x = \pi$ ; $y = -1$ $x = 2\pi$ ; $y = 1$ $x = 3\pi$ ; $y = -1$ $x = 4\pi$ ; $y = 1$

$See$ $graph$ $below$ $for$ $y$ $=$ $\cos x$ $between$ $x = -4\pi$ $and$ $x = 4\pi$: