Step-by-step explanation:
find B° = m∆-90°-50°
= 180°-90°-50°
B°=40°
find c
since cos(b) = 27/c
cos(40°) =27/c
c=27/cos(40°)
c≈35.246
fin b
since sin(b) = b/c
sin(40°)=b•c
b= sin(40°)•c
b≈22.656
