Answer:
[tex]\huge\boxed{\sf B.}[/tex]
Step-by-step explanation:
tan 30 = opposite / adjacent
Where opposite = x , adjacent = 10 and tan 30 = √3 / 3
[tex]\sf \frac{\sqrt{3} }{3} = \frac{x}{10} \\\\x = \frac{10\sqrt{3} }{3} \\\\\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807
