Answer:
B=40°
a=15.9
c=24.8
Step-by-step explanation:
B= 180°-(50°+90°) =40°
cosB=opposite/hypotenus
cos(40)=19/c
c=19/cos(40)
=24.8
a^2 + b^2 = c^2
a^2 + 19^2 = 24.8^2
a^2 = 24.8^2 - 19^2
= 615.04 - 361
= 254.04
a= redical(254.04) = 15.9
HOPE THIS HELPS :)