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  • Provide solution for RD sharma maths class 12 chapter 23 Scalar or dot product exercise Fill in the blanks question 9

Provide solution for RD sharma maths class 12 chapter 23 Scalar or dot product exercise Fill in the blanks question 9

Answers (1)

best_answer

\vec{a}.\vec{b}

Hint:

               Use projection \vec{a} on \vec{b}

Given:

               If \vec{a},\vec{b} are two non-zero vector, then projection of \vec{a} on \vec{b} is

Solution:

               Projection of \vec{a} on \vec{b}=\frac{1}{|b|}\vec{a}.\vec{b}
           \left |\vec{a} \right |=\left |\vec{b} \right |=1\\ \left |\vec{b} \right |=1

               Hence Projection of \vec{a} on \vec{b} = \vec{a}.\vec{b}

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