$ \displaystyle \tan \theta =\frac{Opposite}{Adjacent}$

tan3° = $ \displaystyle =\frac{305}{x}$

x ⋅ tan3° = 305

x = $\displaystyle \frac{{305}}{{\tan {{3}^{{}^\circ }}}}$

$\displaystyle tg{{3}^{\circ }}=0.052$

x = $\displaystyle \frac{{305}}{{0.052}}=5865.38$

**x ****$\displaystyle \approx $**** 5865**