将√3/2cosx+1/2sinx化为Acos(ωx+φ)(A>0,ω>0,|φ|

问题描述:

将√3/2cosx+1/2sinx化为Acos(ωx+φ)(A>0,ω>0,|φ|

√3/2cosx+1/2sinx=sin60°*cosx+cos60°*sinx
=sin(x+60°)=cos(x+30°)