The prices of fruit generally run up during the winter months.
已知函数f(x)=sin(ωx﹣π12)+cos(ωx﹣π12)(0<ω<10)的图象关于直线x=1对称,则满足条件的ω的值的个数为( )
如图,四边形ABCD内接于⊙O,AB、DC延长线交于N,AD、BC的延长线交于M,∠M=40°,∠N=20°,则∠A是( )