f (x)= cos(2x-丌/3)化为sin

问题描述:

f (x)= cos(2x-丌/3)化为sin

f (x)= cos(2x-丌/3)=sin(π/2+2x-π/3)=sin(2x+π/6)
依据公式sin(π/2+x)=cosx而来!明白了,谢谢!嗯,没事!