问题描述:
0<α<π/2,若cos(α+π/6)=4/5,则sin(2α+π/3)+ cos(2α+π/3)
0<α<π/2,若cos(α+π/6)=4/5,则sin(2α+π/3)+
cos(2α+π/3)=
0<α<π/2,若cos(α+π/6)=4/5,则sin(2α+π/3)+
cos(2α+π/3)=
问题解答:
我来补答展开全文阅读