化简cosx-根号3cos(30°+x)+cos(x+60°)
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/02 14:22:57
化简cosx-根号3cos(30°+x)+cos(x+60°)
![化简cosx-根号3cos(30°+x)+cos(x+60°)](/uploads/image/z/8817597-45-7.jpg?t=%E5%8C%96%E7%AE%80cosx-%E6%A0%B9%E5%8F%B73cos%2830%C2%B0%2Bx%29%2Bcos%28x%2B60%C2%B0%29)
原式
=cosx-根号3 cos30cosx+根号3sin30sinx+cosxcos60-sinxsin60
=cosx-3/2cosx+根号3 /2 sinx +1/2 cosx-根号3/2 sinx
=0
=cosx-根号3 cos30cosx+根号3sin30sinx+cosxcos60-sinxsin60
=cosx-3/2cosx+根号3 /2 sinx +1/2 cosx-根号3/2 sinx
=0
化简cosx-根号3cos(30°+x)+cos(x+60°)
化简cosx-√3 cos(30°+x)+cos(x+60°)
化简cos(15°-x)-根号3cos(15°+x)+cos(45°+x)
cosx+根号3sinx=2cos(x-π/3)
cos(x-派\6)=-根号3\3,则cosx+cos(x-派\3)=
f(x)=sinx/4*cosx/4+根号3cos^2*x/4化简
化简cos(X-30°)+sin(X+30°)+cosX+1
化简f(x)=cosx+cos(x+派/3).
化简cos(x+3o.)CoSx+Sin(x+30.)Sinx
已知函数f(x)=2sinx*cosx+2根号3cos^2x-根号3
化简 根号3sinXcosX+cos*2X
化简cos(2π/3-x)+cos(2π/3+x)+cosx