Answer:
D.
Step-by-step explanation:
just done the assignment
The transformation negates the y-coordinate, so reflects a point across they x-axis.
Well flat means open so 180°
180° - 50° = 130° is the answer
You can go full 2π rotate around counterclockwise so the angle wouldn't be negative.
So -π/2 + 2π = -π/2 + 4π/2 = 3π/2
So (4, 3π/2) is the same point as (4, -π/2)
Shouldn’t there be a picture?