Expression 5: "y" equals "d" times tangent left parenthesis, "Q" , right parenthesis minus StartFraction, left parenthesis, 9.8 1 , right parenthesis times "d" squared Over left parenthesis, 2 times "v" squared times cos squared left parenthesis, "Q" , right parenthesis , right parenthesis , EndFraction left brace, negative 89 less than "Q" less than 89 , right bracey=d·tanQ−9.81·d22·v2·cos2Q−89<Q<89