Answer
$2\sqrt {13}$.
Work Step by Step
Use the distance formula, we have $d=\sqrt {(10-4)^2+(3+1)^2}=\sqrt {52}=2\sqrt {13}$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 5 - Trigonometric Functions - Section 5.6 Phase Shift; Sinusoidal Curve Fitting - 5.6 Assess Your Understanding - Page 454: 44
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