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  1. Chapter 7 Class 10 Coordinate Geometry (Term 1)
  2. Concept wise

Transcript

Ex 7.1 , 1 Find the distance between the following pairs of points : (i) (2, 3), (4, 1) Let the two points be P(2, 3) & Q(4, 1) We need to find distance PQ PQ = โˆš((๐‘ฅ2 โˆ’๐‘ฅ1)2+(๐‘ฆ2 โˆ’๐‘ฆ1)2) Here, x1 = x coordinate of P = 2 y1 = y coordinate of P = 3 x2 = x coordinate of Q = 4 y2 = y coordinate of Q = 1 Putting values PQ = โˆš((4 โˆ’2 )2+(1 โˆ’3)2) = โˆš((2 )2+(โˆ’2)2) = โˆš((2 ร—2)+(โˆ’2 ร—โˆ’2) ) = โˆš(4+4) = โˆš8 = โˆš(4(2)) = โˆš(4 ร—(2)) = โˆš4 ร— โˆš2 = 2 ร— โˆš2 = 2โˆš๐Ÿ

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.