Write the projection of ` hat i+ hat j+ hat k` along the vector ` hat jdot`

Explanation

Projection of `vec{a} on vec{b}=frac{vec{a} cdot vec{b}}{|vec{b}|}`


Projection of `vec{i}+vec{j}+vec{k}` along `vec{j}`


`=frac{(vec{i}+vec{j}+vec{k}) cdot vec{j}}{|vec{j}|} `


`=frac{1}{1} `


`=1`