Answer:
x = 12
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value
sin30° = [tex]\frac{1}{2}[/tex]
sin30° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{BC}{AB}[/tex] = [tex]\frac{6}{x}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )
x = 12
