Answer:
D
Step-by-step explanation:
Using the tangent ratio in the right triangle and the exact value
tan30° = [tex]\frac{\sqrt{3} }{3}[/tex] , then
tan30° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{x}{7}[/tex] = [tex]\frac{\sqrt{3} }{3}[/tex] ( cross- multiply )
3x = 7[tex]\sqrt{3}[/tex] ( divide both sides by 3 )
x = [tex]\frac{7\sqrt{3} }{3}[/tex] → D
