Expression 3: "x" less than cosine left parenthesis, "t" , right parenthesis left brace, 0 less than "y" less than sin left parenthesis, "t" , right parenthesis , right bracex<cost0<y<sint
3
Expression 4: "y" greater than 0 left brace, negative 1 less than "x" less than cos left parenthesis, "t" , right parenthesis , right bracey>0−1<x<cost
4
Expression 5: "x" sine left parenthesis, "t" , right parenthesis minus "y" left parenthesis, cos left parenthesis, "t" , right parenthesis plus 1 , right parenthesis plus sine left parenthesis, "t" , right parenthesis greater than 0 left brace, negative 1 less than "x" less than cos left parenthesis, "t" , right parenthesis , right bracexsint−ycost+1+sint>0−1<x<cost