Respuesta:
Valor numérico: 7/12
Explicación paso a paso:
[tex]\frac{tg^{2}30 + sen^{2}30 }{csc^{2}45+csc^{2}30} \\\\\frac{(\frac{\sqrt{3} }{3})^{2} + (\frac{1}{2})^{2} }{(\sqrt{2})^{2} +2^{2} } \\\\\frac{\frac{1}{3}+\frac{1}{4} }{6} \\\\\frac{7}{12} *\frac{1}{6}=\frac{7}{72}[/tex]
