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  • Find the projection of the vector i − j on the vector i + j .

 Q3  Find the projection of the vector \hat i - \hat j on the vector \hat i + \hat j

Answers (1)

best_answer

Let 

\vec a=\hat i - \hat j

\vec b=\hat i + \hat j

Projection of vector \vec a on \vec b

\frac{\vec a.\vec b}{\left | \vec b \right |}=\frac{(\hat i-\hat j)(\hat i+\hat j)}{\left |\hat i+\hat j \right |}=\frac{1-1}{\sqrt{2}}=0

Hence, Projection of vector \vec a on \vec b is 0.

Posted by

Pankaj Sanodiya

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