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Response Details:
Assuming that by (3.2) you mean (3,2) as in r = 3 and θ = 2, then the other two points will have polar coordinates of (3, 2+2π), because changes of 2π in the angle do not change the direction, and (-3, 2+π), because making the radius negative serves to change the angle by 180 degrees, or π radians, and so this must be corrected for in the angle.
Similarly, for (3,0), our two points are (3, 2π) and (-3, π).
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