sin(x-π/3)=1/3,则cos(x+π/6)=?

问题描述:

sin(x-π/3)=1/3,则cos(x+π/6)=?

cos(x+六分之派)=cos[二分之派+(x-三分之派)]=-sin(x-三分之派)= -三分之一请采纳^_^