Ex 9.1, 3 (ii) - Chapter 9 Class 11 Straight Lines

Last updated at April 16, 2024 by

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Ex 9.1, 3 Find the distance between P (x1, y1) and Q (x2, y2) when: (ii) PQ is parallel to the x-axis. Since PQ is parallel to x-axis y1 = y2. Distance PQ = √("(" 𝑥_2−𝑥_1 "2" +"(" 𝑦_2−𝑦_1 ")2" ) = √("(" 𝑥_2−𝑥_1 ")2 " +"(" 𝑦_1−𝑦_1 ")2" ) = √("(" 𝑥_2−𝑥_1 ")2" +0) = √("(" 𝑥_2−𝑥_1 ")2" ) = ± (𝑥_2−𝑥_1) = |𝒙_𝟐−𝒙_𝟏 |

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.