Answer:
160
Step-by-step explanation:
bottom triangle the angle beside 30 degrees. to get it, it is 180-140 = 40 degrees
then you do 180-30-40 to get the angle of the top angle of the bottom triangle. which is 110 degrees
you flip that up to the top triangle, which then you find the angle beside "u" which is 180-50-110, which is 20 degrees
then you do 180-20 to get "u"
which it is 160 degrees
