已知sin(X+π/6)=2/3,求sin(X+19π/6)+sin²(π/3-X)的值?

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/26 07:43:46
已知sin(X+π/6)=2/3,求sin(X+19π/6)+sin²(π/3-X)的值?
x){}K3>ߠo~OγM0aCK6PD(3֍>aMR>U/ Vk Sl|Ar#]=HZ󋑵i#T Z uz *M% C K 1F

已知sin(X+π/6)=2/3,求sin(X+19π/6)+sin²(π/3-X)的值?
已知sin(X+π/6)=2/3,求sin(X+19π/6)+sin²(π/3-X)的值?

已知sin(X+π/6)=2/3,求sin(X+19π/6)+sin²(π/3-X)的值?
sin(X+19π/6)+sin²(π/3-X)
=sin(X+3π+π/6)+sin²(π/2-π/6-X)
=sin(X+π+π/6)+cos²(π/6+X)
=-sin(X+π/6)+cos²(π/6+X)
=-2/3+1-sin²(π/6+X)
=1/3-(2/3)²
=1/3-4/9
=-1/9

已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x) 已知sin(x+π/6)=1/4,求sin(5π/6-x)+sin^2(π/3-x) 傅里叶级数作图f(x)=2sin[x] - sin[2x] + 2/3sin[3x] - 1/2sin[4x]我用mathematica输入程序Plot[{2sin[x],-2sin[x],2sin[x] - sin[2x],-2sin[x] + sin[2x],2sin[x] - sin[2x] + 2/3sin[3x],-2sin[x] + sin[2x] - 2/3sin[3x],2sin[x] - sin[2x] + 2/3si 已知sin(X+π/6)=2/3,求sin(X+19π/6)+sin²(π/3-X)的值? 已知sin(X+π/6)=2/3,求sin(X+19π/6)+sin²(π/3-X)的值? 已知F(X)=根号3COS^2 X+SIN XCOS X-2SIN X*SIN(X-π/6),求F(X)的最大值 设f(x)=4cos(ωx-π/6)sinωx-cos(2ωx+π),其中ω>0,求函数y=f(x)的值域,请看问题补充f(x)=4cos(ωx-π/6)sinωx-cos(2ωx+π) =4(coswxcosπ/6+sinwxsinπ6)sinwx+cos2wx =2√3sinwxcoswx+2sin²wx+cos2wx =√3si 已知sin(x+π/3)=1/4,求sin(2π/3-x)+cos²(π/6-x) 已知α为锐角,且sin²α-sinαcosα-2cos²α=0 (1)求tanα的值 (2)求si已知α为锐角,且sin²α-sinαcosα-2cos²α=0(1)求tanα的值(2)求sin(α-π/3)的值求详解 已知 Sin(X+ 派/6)=1/4求 Sin(5/6派 - X)+Sin^2 (派/3 -X) 已知tan(x+π/6)=2,(1)若x∈(π/2,π),求sin(π/3-x)的值;(2)求sin(x+7π/6)sin(x-4π/3)的值 已知y=sin(2x+π/6) 求值域 已知sin(π+x)+sin(3/2π-x)=1/5,求tanx过程 已知sin(x+π/6)=1/4,求sin(5π/6-x)+sin^2(11π/6-x)如题, 已知sin(x+6/π)=4/1,求sin(6/5π-x)+sin^2(3/π-x)的值 已知函数f(x)=[2sin(x-π/6)+√3sin x]cos x+sin^2x,x∈R 已知sin(x)+3cos(x)=2,求sin(x)-cos(x)/sin(x)+cos(x)=? 已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)=sin(2x-π/6) ,已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)=sin(2x-π/6) 设g(x)=f(x+a)为偶函数,求a的最小正数