sin(x + π/6)cos(π/3 - x)的最小正周期怎么算?
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sin(x + π/6)cos(π/3 - x)的最小正周期怎么算?
sin(x + π/6)cos(π/3 - x)的最小正周期怎么算?
sin(x + π/6)cos(π/3 - x)的最小正周期怎么算?
cos[π/2-(π/3+x)]=cos(π/6-x)=sin(π/3+x)
y=sin(x+π/3)cos(π/6-x)
=sin(x+π/3)sin(π/3+x)
=sin²(π/3+x)
=[1-cos(2π/3+2x)]/2
=1/2-1/2cos(2π/3+2x)
T=2π/2=π
sin cos之间怎么转换?sin(π/3-2X)等于cos多少?
cos(x+π/3)是不是等于sin(x-π/6)
cos(π/6-x)=sin(π/3+x)?为什么
求证 tan(2π-X)sin(-2π-X)cos(6π-X)/ sin(X+3π/2)*cos(X+3π/2)=-tanX
tanx=m,则{sin(x+3π)+cos(π+x)}/{sin(-x)-cos(π+x)}=?
sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简 sin(x+π/3)+(tanπ/6)cos(x+π/3) 化简
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sin(π/6+x)=1/3 cos(2π/3-2x)=?
sin(x-π/3)=1/3,则cos(x+π/6)=?
sin(x+π/6)=3/5,则cos(2x+π/3)=
化简:sin(π/3+4x)+cos(π/6-4x)
函数y=sin(x+π/3)cos(π/6-x)
sin(x + π/6)cos(π/3 - x)的最小正周期怎么算?