Answer:
<h2>Angle EOC.</h2>
Step-by-step explanation:
You can observe the figure in the image attached.
Notice that angle AOE is 90°, that is, it's a right angle. (The little red square indicates its perpendicularity).
Now, the adjacent and congruent angle to AOE is angle EOC, because they are on a straight angle, they are supplementary angles and also adjacent angles.
Answer:
h\
Step-by-step explanation:
THis is true they will both be 90 degrees
90 + 90 = 180 - also supplementary.
the 2 equations are vertical angles, which mean they are equal to each other.
Set them to equal and solve for X:
x+40 = 3x
Subtract 1x from each side:
40 = 2X
Divide both sides by 2:
X = 40/2
X = 20
-(-|-4.2|) = -(-4.2) = +4.2