=-sin(π/6+π/4)
=-(sinπ/6cosπ/4+cosπ/6sinπ/4)
=-(√6+√2)/2谢谢，答案是=-√6/4-√2/4，能重新解吗哦，对不起，写错了=-sin(π/6+π/4)=-(sinπ/6cosπ/4+cosπ/6sinπ/4)=-(√6+√2)/4