Answer:
#3 is not a function
Step-by-step explanation:
One input only has one output.
but #3, input (3) has 2 outputs (4 and 6)
goyoddittdydgidiydgixhxhzldgidgiugohfjlxugaufdh
x = 180 - 2 * 35 = 110°
y = (180 - 82)/2 = 49°