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Example 5. ukuran wiremesh m8 4. live final indonesia vs vietnam 1: (Converting from Rectangular to Polar Coordinates) To determine polar coordinates for the the point ( − 2, 2) in rectangular coordinates, we first draw a picture and note that r 2 = ( − 2) 2 + 2 2 = 8 Since it is usually easier to work with a positive value for r, we will use r = 8