Answer:
B = 26.407 degrees
C = 73.593 degrees
c = 30.196 units
Step-by-step explanation:
Use the law of sines
sin(B) / 14 = sin(80) / 31
B = sin-1( sin(80) / 31 x 14)
B = 26.407
C = 180 - 80 - 26.407
C = 73.593
c / sin(73.593) = 31 / sin(80)
c = 31 / sin(80) x sin(73.593)
c = 30.196