Is this all one equation??


The basic angle for 1/2 is 60°, and cosines are negative in the first and third quadrant.
So, you take 180° - 60° = 120° to get the angle in the first quadrant, and 180° + 60° = 240° to get the angle in the third quadrant.
Since only 120° is an option, the answer is
B.
So you know 50% means half right? So then do 32*2 and you get 64.
6*100 = 600
600 + 38 = 638
therefore the answer is:
638/100
however this is an improper decimal.