Expression 196: sine left parenthesis, left parenthesis, StartFraction, "x" Over 15 , EndFraction , right parenthesis squared plus left parenthesis, 25 "y" , right parenthesis squared , right parenthesis greater than or equal to tangent left parenthesis, left parenthesis, StartFraction, "x" Over 2 , EndFraction , right parenthesis squared plus left parenthesis, 25 "y" , right parenthesis , right parenthesissinx152+25y2≥tanx22+25y