Respuesta :
64° and x-------> are complementary angles
64°+x=90°
then
x=90-64----------> 26°
so
sin 64°=cos 26°
the answer is
x=26°
64°+x=90°
then
x=90-64----------> 26°
so
sin 64°=cos 26°
the answer is
x=26°