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Chapter 9: Q. 1 (page 621)

The distance dfrom P1=x1,y1to P2=x2,y2 is d = _______ .

Short Answer

Expert verified

The distanced=x2-x12+y2-y12

Step by step solution

01

Step 1. Given information

We have been given two points P1=x1,y1and P2=x2,y2

We have to find the distancedbetween these two points.

02

Step 2. Find the distance between these two points.

Sketch these points on the coordinate axis.

The distance required between P1P2is d.

The distance between P1P3is x2-x1

The distance between P2P3is y2-y1

Using Pythagoras theorem,
role="math" localid="1646804280597" d2=x2-x12+y2-y12d=x2-x12+y2-y12

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