i dont understand how to do this

Answer:
x ≈ 38.61
Step-by-step explanation:
using the tangent ratio in the right triangle
tan47° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{x}{35}[/tex] ( multiply both sides by 35 )
35 × tan47° = x , then
x ≈ 37.53 ( to 2 dec. places )