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  • Please Solve RD Sharma Class 12 Chapter 23 Scalar or Dot Product Exercise Very Short Answer Question 31 Maths Textbook Solution.

Please Solve RD Sharma Class 12 Chapter 23 Scalar or Dot Product Exercise Very Short Answer Question 31 Maths Textbook Solution.

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Answer :-  \frac{3}{2}

Hint :- Apply the formula of projection of  \vec{b}\: and \: \vec{a}

Given :-  |\vec{a}|=2 \&|\vec{b}|=3 \& \vec{a} \cdot \vec{b}=3

Solution :- projection of   \vec{b} \text { on } \vec{a}=\frac{\vec{a} \cdot \vec{b}}{|\vec{a}|}

\Rightarrow projection of    \vec{b} \text { on } \vec{a}=\frac{3}{2}[\because \vec{a} \cdot \vec{b}=3 \&|\vec{a}|=2]

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