What is the value of x?!

Answer:
5[tex]\sqrt{3}[/tex]
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value of
sin60° = [tex]\frac{\sqrt{3} }{2}[/tex], then
sin60° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{x}{10}[/tex]
Multiply both sides by 10
10 × sin60° = x
10 ×[tex]\frac{\sqrt{3} }{2}[/tex], hence
x = 5[tex]\sqrt{3}[/tex]