Maths-
General
Easy

Question

If Sin space A equals Sin space B comma Cos space A equals Cos space B text  then  end text A equals

  1. n pi plus B comma straight for all n element of Z
  2. 2 n pi plus B comma straight for all n element of Z
  3. 2 n pi minus B comma straight for all n element of Z
  4. 2 n pi plus-or-minus B comma straight for all n element of Z

The correct answer is: 2 n pi plus B comma straight for all n element of Z

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