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Last updated at Aug. 24, 2021 by Teachoo

Transcript

Example 11 Consider two points P and Q with position vectors (๐๐) โ = 3๐ โ โ 2๐ โ and (๐๐) โ = ๐ โ + ๐ โ . Find the position vector of a point R which divides the line joining P and Q in the ratio 2 : 1, (ii) externally. Position vector of R = (2(๐๐) โ โ 1(๐๐) โ)/(๐ โ ๐) (๐๐ ) โ = (2(๐ โ + ๐ โ ) โ 1(3๐ โ โ 2๐ โ))/(2 โ 1) = (2๐ โ + 2๐ โ โ 3๐ โ + 2๐ โ)/1 = โ๐ โ + 4๐ โ = 4๐ โ โ ๐ โ

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Example 26 (Supplementary NCERT) Deleted for CBSE Board 2022 Exams

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About the Author

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.