Let s-fxe[-14|| sin(x) >0}. whichof the following is true ? 1. inf (s) <0 2. sup(s) does ot exist 3. sup( s) = z 4. inf (s) =r/2 (csir net dec 2017)

Let S-fxe[-14|| sin(x) >0}. Whichof the following is true ? 1. inf (S) <0 2. sup(S) does ot exist 3. sup( S) = z 4. inf (S) =r/2 (CSIR NET Dec 2017)