cos(-23π/4)+sin(37π/6)
问题描述:
cos(-23π/4)+sin(37π/6)
答
cos(-23π/4)+sin(37π/6)
=cos(-6π+π/4)+sin(6π+π/6)
=cosπ/4+sinπ/6
=√2/2+1/2
=(√2+1)/2
应该没出错,若有问题请追问,