## Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

$\lt$
Note that $\displaystyle \frac{2}{3}\approx 0.66666....$ Hence, on the number line, $\displaystyle \frac{2}{3}$ lies to the left of $0.67$. Therefore, $\displaystyle \frac{2}{3} \lt 0.67$.