Answer:
first, solve for the angle c
let angle c be x
50+79+x=180
angle in a triangle
129+x=180
collect like terms
x=180-129
x=51
using sine rule
a/sinA=c/sinC
a/sin50=8/sin51
cross multiply
a×sin51=8×sin50
therefore a= 8×sin50/sin51
note; to get the real answer solve the numerator first before dividing
am sorry I could have solved it completely for u but my calculator is not good
