Physics - Vectors Question with Solution | TestHub

Two vectors are given as $\vec{A}=\hat{i}+\hat{j}+\hat{k}$ and $\vec{B}=\hat{i}+\hat{j}+2\hat{k}$. Find the value of scalar $x$ such that $(\vec{A}-x\vec{B})$ is perpendicular to $\vec{A}$.