Fine angle B. Please help!

Answer:
D. 13 degrees
Step-by-step explanation:
Using the law of sines, [tex]\frac{sinC}{c}=\frac{sinB}{b}[/tex]
and substituting known values into this equation:
[tex]\frac{sin(75)^\circ}{30}=\frac{sinB}{7}[/tex]
[tex]7\cdot{sin(75)^\circ}={sinB}\cdot{30}[/tex]
divide both sides by 30
[tex]\frac{7\cdot{sin(75)^\circ}}{30}=sinB[/tex]
[tex]sin(13)\div7=0.0321...[/tex] and [tex]sin(75)\div30=0.0321...[/tex]