cos(π/4+X)=3/5,17π/12
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/03 00:03:34
cos(π/4+X)=3/5,17π/12 cos(π/4+X)=3/5,17π/12
cos(π/4+X)=3/5,17π/12
COSX-SinX=3/5*2^0.5;cosX*sinX=7/50;CosX+sinX=-4/5*2^0.5,[sin2X+2(sinX)^2]/(1-tanX)=2[sinxcosx(cosx+sinx)]/cosx-sinx=-28/75
cos(π/4+x)=3/5,17π/12
cos(π/4+X)=3/5,17π/12
cos(π/4+x)=3/5,17π/12
cos(π/4+x)=3/5,17π/12
cos(π/4+x)=3/5,17/12π
cos(π/4+x)=3/5,17π/12
cos(π/4+x)=3/5,17π/12
cos(π/4+x)=3/5,-17π/12
cos(2x-π)/[根号2cos(x+π/4)]=-1/5,0
已知sin[a-b]cos a-cos[b-a]sin a=3/5,b是第三象限角,求sin[b+5π/4]的值第一题1/2cos x-√3/2sin x第二题√3sin x+cos x第三题√2[sin x-cos x]第四题√2cos x-√6sin x
已知cos(x+45º)=3/5且17π/12<x<7π/4,求(sin2x+2cos²x)/1-tanx的值注意!括号里加的是cos^2x
y=cos(π/3-x)cos[π/2(x-1)]判断奇偶性y=cos(π/3-x)cos(π/3+x)判断奇偶性
三角函数解方程 (cos 3x)^3+ (cos 5x)^3 = 8 (cos 4x)^3 (cos x)^3
已知cos(π/4+x)=3/5 ,0
化简sin(3π-x)cos(x-3/2)cos(4π-x)/tan(x-5π)cos(π/2+x)sin(x-5/2π)
化简sin(3π-x)cos(x-3/2)cos(4π-x)/tan(x-5π)cos(π/2+x)sin(x-5/2π)
为什么cos(2x-π/3)-sin(5π/6) =cos(2x-π/3)?
三角函数运算 为什么 cos2x+cos( 4π/3 -2x)=cos( π/3 +2x)