Last updated at May 6, 2021 by Teachoo

Transcript

Example 7 Find a vector in the direction of vector ๐ โ = ๐ ฬ โ 2๐ ฬ that has magnitude 7 units. Given ๐ โ = ๐ ฬ โ 2๐ ฬ = 1๐ ฬ โ 2๐ ฬ + 0๐ ฬ Magnitude of ๐ โ = โ(12+(โ2)2+02) |๐ โ | = โ(1+4+0) = โ๐ Unit vector in direction of ๐ โ = ๐/(๐ด๐๐๐๐๐๐๐ ๐ ๐๐ ๐ โ ) ร ๐ โ ๐ ฬ = 1/โ5 ["1" ๐ ฬ" + " 2๐ ฬ" + " 0๐ ฬ ] ๐ ฬ = 1/โ5 ๐ ฬ โ 2/โ5 ๐ ฬ Thus, Vector having a magnitude 1 = 1/โ5 ๐ ฬ โ 2/โ5 ๐ ฬ Vector having a magnitude 7 = 7[1/โ5 " " ๐ ฬ" โ " 2/โ5 " " ๐ ฬ" " ] = 7/โ5 " " ๐ ฬ" โ " 14/โ5 " " ๐ ฬ Thus, required vector is ๐/โ๐ " " ๐ ฬ" โ " ๐๐/โ๐ " " ๐ ฬ

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

Example 27 (Supplementary NCERT) Deleted for CBSE Board 2022 Exams

Example 28 (Supplementary NCERT) Important Deleted for CBSE Board 2022 Exams

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Example 30 (Supplementary NCERT) Important 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.