### Home > PC > Chapter 11 > Lesson 11.1.1 > Problem11-16

11-16.

Mary wants to graph the function $y = −8\cos x$ between $-4\pi$ and $4\pi$. What angle mode should she put her graphing calculator in and what size window should she use?

Is π a measure of radians or degrees?

What is the amplitude of this graph? This will help you determine the range.