Answer
$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
Work Step by Step
The distance formula from $P_1$ to $P_2$ is $d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 8 - Applications of Trigonometric Functions - 8.3 The Law of Cosines - 8.3 Assess Your Understanding - Page 537: 1
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