0<α<π/2,若cos(α+π/6)=4/5,则sin(2α+π/3)+ cos(2α+π/3)

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)=

答案是25分之31满意的话,好评哦亲