Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter F - Foundations: A Prelude to Functions - Section F.4 Circles - F.4 Assess Your Understanding - Page 38: 6

Answer

$\text{unit}$

Work Step by Step

A circle whose center is at the origin and has a radius of $1$ unit, its equation is $x^2+y^2=1$. This is called the unit circle.
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