Answer:
65 degrees
Step-by-step explanation:
Break the parallelogram up into two triangles. Angle E is 70 degrees and 45 degrees because of the property of equal opposite angles. So E 45 degrees Y 70 degrees and if you add the two up you get 115 degrees. There are 180 degrees in a triangle, so 180-115=65.
They don't need to be pure real or imaginary. Any "mixed" complex number works so long as .
Let . Then
so .
The geometric interpretation is essentially identical. is a complex number twice the distance away from the origin in the complex plane as , which is exactly .
X+y=12
x-y=4
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2x= 16
x= 8
y= 4