Start learning →

Tap every statement true of the scalar product

Exercise and reference answers

Questions
  1. Items
    1. Text
      Written a · b
      Matches the category
      Yes
    2. Text
      Equals |a||b| cos θ
      Matches the category
      Yes
    3. Text
      Gives a number
      Matches the category
      Yes
    4. Text
      Gives a vector perpendicular to both
      Matches the category
      No
    5. Text
      Uses sin θ
      Matches the category
      No
    Category
    True of the SCALAR (dot) product
  2. Items
    1. Text
      Written a × b
      Matches the category
      Yes
    2. Text
      Uses sin θ
      Matches the category
      Yes
    3. Text
      Points perpendicular to the plane of a and b
      Matches the category
      Yes
    4. Text
      Gives a plain number
      Matches the category
      No
    5. Text
      Uses cos θ
      Matches the category
      No
    Category
    True of the CROSS product

Explanation

The dot product is defined by |a||b| cos θ, and it is the tool for finding angles. Source: syllabus Maths Part II, Ch 10 Vector Algebra.
Continue learning with Quill →

Browse more Bihar Board Class 12 (Commerce) questions and exercises →