#### Answer

$1$

#### Work Step by Step

$\frac{\pi}{4}=60^o$ is a special angle that intersects the unit circle at the point $(\frac{\sqrt2}{2}, \frac{\sqrt3}{2})$.
Since $\tan{\theta}=\frac{y}{x}$, then
$\tan{\frac{\pi}{4}} =\dfrac{\frac{\sqrt2}{2}}{\frac{\sqrt2}{2}}=1$