Answer: [tex]\frac{x}{20}[/tex]
Step-by-step explanation:
Sine uses the ratio, [tex]\frac{opposite}{hypotenuse}[/tex] so we can plug in the information we know. since there is no current value for the opposite side of angle A, we can just use a variable to replace it.
[tex]sinA=\frac{x}{20}[/tex]
You can't reduce this any further because there is an unknown variable.
