$\"\"$

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The degree measure $\"\"$ .

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A positive angle is $\"\"$

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$\"\"$ (LCM)

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$\"\"$ (Multiply)

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$\"\"$ (Add) $\"\"$

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A negative angle is $\"\"$

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$\"\"$ (LCM)

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$\"\"$ (Multiply)

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$\"\"$ (Subtract) $\"\"$

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The solutions are $\"\"$ .