Question 212322
The line is:
x/2 + y=0
2x+y=0
y=-2x
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This line is passing through the origin and quadrants II and IV.
Since the angle has a terminal side at quad. II,
If a is the angle, then tan a=-2
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Getting the arc tan,
tan a=-2
a=arctan -2=<u>116.565 degrees</u>