Find mZB
Note that m B is acute. Round to the nearest degree.
С
15
B
11
81°
A

Step-by-step explanation:
[tex] \frac{ \sin(81) }{51} = \frac{ \sin(b) }{11} \\ \sin(b) = 0.213 \\ b = 12.3 \: degrees = 12 \: degrees[/tex]