\vec{A}=3 \hat{i}+2 \hat{j}+\hat{k}, \vec{B}=\hat{i}+2 \hat{j}-3 \hat{k} এবং \vec{C}=\hat{i}+\hat{j}-2 \hat{k} হলে প্রমাণ কর যে, \overrightarrow{A} \cdot(\overrightarrow{B} \times \overrightarrow{C})=(\overrightarrow{A} \times \overrightarrow{B}) \cdot \overrightarrow{C}