sin(x+π/4)怎么化简?X+π/6呢?π/8?

问题描述:

sin(x+π/4)怎么化简?
X+π/6呢?π/8?

sin(x+π/4)=sin x ×cos (π/4)+cos x ×sin(π/4)=√2/2(sin x+cos x)