Question

complete the sentence below. on the interval π,2π, the function values of the cosine function increase from to

Explanation:

Step1: Recall cosine - function values

We know that \(y = \cos x\). When \(x=\pi\), \(\cos(\pi)=- 1\). When \(x = 2\pi\), \(\cos(2\pi)=1\).

Step2: Analyze the interval

On the interval \([\pi,2\pi]\), the cosine - function is increasing.

Answer:

-1; 1