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Question

If y plus Cos space theta equals Sin space theta has a real solution then

  1. negative square root of 2 less or equal than y less or equal than square root of 2
  2. y greater than square root of 2
  3. y less or equal than negative square root of 2
  4. y less or equal than 1

The correct answer is: negative square root of 2 less or equal than y less or equal than square root of 2

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