Polar coordinates
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Problem 1
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Oops, wrong answer! Please try again
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Problem 2
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Oops, wrong answer! Please try again
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Problem 3
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Oops, wrong answer! Please try again
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Problem 4
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Oops, wrong answer! Please try again
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Problem 5
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Oops, wrong answer! Please try again
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Problem 6
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Oops, wrong answer! Please try again
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Problem 7
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