Answer:
x = [tex]\sqrt{21}[/tex]/3
Step-by-step explanation:
In a 30-60-90 triangle, the longer leg is [tex]\sqrt{3}[/tex] times the shorter leg.
So, x[tex]\sqrt{3}[/tex] = [tex]\sqrt{7}[/tex]
x = [tex]\sqrt{7}[/tex]/[tex]\sqrt{3}[/tex] = [tex]\sqrt{21}[/tex]/3
