Maharashtra State BoardHSC Arts 12th Board Exam
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If |a¯| = 2, |b¯| = 5, and a¯⋅b¯ = 8 then |a¯-b¯| = ______ - Mathematics and Statistics

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MCQ
Fill in the Blanks

If `|bar("a")|` = 2, `|bar("b")|` = 5, and `bar("a")*bar("b")` = 8 then `|bar("a") - bar("b")|` = ______ 

Options

  • 13

  • 12

  • `sqrt(13)`

  • `sqrt(21)`

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Solution

`sqrt(13)`

Concept: Algebra of Vectors
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