Answer:
x=21.35764429=21.4
Step-by-step explanation:
Take SOHCAHTOA
in this problem you're going to use SOH, which is sine= opposite/hypotenuse
sin31=11/x
Multiply by x as a way to isolate it
x(sin31)=11
divide my sin31 to isolate x
x=11/sin31
x=21.35764429
