# Chapter 4 - Section 4.2 - Trigonometric Functions: The Unit Circle - Concept and Vocabulary Check - Page 546: 4

$1$; $-1$; $[-1, 1]$

#### Work Step by Step

The sine and the cosine functions have $1$ as their maximum value and $-1$ as their mnimum value. Thus, their range is $[-1, 1]$. Therefore, the missing expression in the given statements are (in order): $1$; $-1$; $[-1, 1]$

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