#1:
Since complementary means "equal to 90 degrees" the angle complementary to AOE would be angle BOC. That's because since angle EOC (which is equal to 180 degrees bc it's a straight line) is made up of the angles AOE, AOB, and BOC, and angle AOB is equal to 90 degrees, the value of the remaining angles, AOE and BOC, must be equal to 90 degrees.
#2:
Since supplementary means "equal to 180 degrees" whatever angle that basically creates a straight line would be your answer. So that could be either angles AOC or EOD, you choose what you wanna write as your answer lolol.