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Example 26 (Supplementary NCERT) Deleted for CBSE Board 2023 Exams

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Example 29 (Supplementary NCERT) Important Deleted for CBSE Board 2023 Exams

Example 30 (Supplementary NCERT) Important Deleted for CBSE Board 2023 Exams

Example 31 (Supplementary NCERT) Important Deleted for CBSE Board 2023 Exams

Last updated at March 22, 2023 by Teachoo

Example 13 Find the angle between two vectors π β and π β with magnitudes 1 and 2 respectively and when π β β π β =1. "Given |" π β"| = 1 , |" π β"| = 2 , " "and " π β". " π β" = 1" We know that π β . π β = "|" π β"|" "|" π β"|" cos ΞΈ where ΞΈ is the angle between π β and π β Putting values in formula π β . π β = "|" π β"|" "|" π β"|" cos ΞΈ 1 = 1 Γ 2 Γ cos ΞΈ cos ΞΈ = 1/2 cos ΞΈ = cos π /π So, ΞΈ = π /π Thus angle b/w π β and π β is π/3 .