sin6分之35派+cos(-3分之11派)
问题描述:
sin6分之35派+cos(-3分之11派)
答
sin6分之35派+cos(-3分之11派)
=sin(6π-π/6)+cos(4π-π/3)
=-sin(π/6)+cos(π/3)
=-1/2+1/2
=0