sin(x+π/4)怎么化简?
问题描述:
sin(x+π/4)怎么化简?
X+π/6呢?π/8?
答
sin(x+π/4)=sin x ×cos (π/4)+cos x ×sin(π/4)=√2/2(sin x+cos x)
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)