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(- 1, \frac{π}{4})

(- \frac{1}{\sqrt{2}}, - \frac{1}{\sqrt{2}})

(\frac{1}{\sqrt{2}}, \frac{1}{\sqrt{2}})

(\frac{1}{\sqrt{2}}, - \frac{1}{\sqrt{2}})

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ANS : 1

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