Question

The value of $\hat{i}\cdot\hat{i}+\hat{j}\cdot\hat{j}$ is

Hint:

The dot product of any unit vector with itself is always \(1\). Therefore \(\hat{i}\cdot\hat{i}=1\), \(\hat{j}\cdot\hat{j}=1\), and \(\hat{k}\cdot\hat{k}=1\).

Answer 1