函数f(x)=sin^2x-sin(2x-π/6)0 - 离问题结束还有 14 天 23 小时 (1)求函数f(x)值域(2)设A,B,C为三角形ABc的三个内角,若cosB=1/3,f(C/2)=-1/4,且C为锐角求sinA
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函数f(x)=sin^2x-sin(2x-π/6)0 - 离问题结束还有 14 天 23 小时 (1)求函数f(x)值域(2)设A,B,C为三角形ABc的三个内角,若cosB=1/3,f(C/2)=-1/4,且C为锐角求sinA
函数f(x)=sin^2x-sin(2x-π/6)
0 - 离问题结束还有 14 天 23 小时
(1)求函数f(x)值域
(2)设A,B,C为三角形ABc的三个内角,若cosB=1/3,f(C/2)=-1/4,且C为锐角求sinA
函数f(x)=sin^2x-sin(2x-π/6)0 - 离问题结束还有 14 天 23 小时 (1)求函数f(x)值域(2)设A,B,C为三角形ABc的三个内角,若cosB=1/3,f(C/2)=-1/4,且C为锐角求sinA
1.化简得f(x)=1/2-cos(π/6)*sin2x.值域【1/2-cos(π/6),1/2+cos(π/6)】
2.C=π/3.sinA=cos(π/6)(根号懒的打)
[(1-Γ3)/2,Γ 3+1)/2]?
Γ3/2?
1
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