pre cal
posted by bob .
Given triangle ABC, A = 120, a = 8, b = 3; determine B to the nearest whole degree

Try the Sine Law
sinB/3 = sin120°/8
sinB = .3247...
B = 18.95°
or
B = 19° 
Given triangle ABC, A = 120°, a = 8, b = 3; determine B to the nearest whole degree.