sin^2(x/2)]*[cos^2(x/2)]等于多少啊
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/17 03:06:56
sin^2(x/2)]*[cos^2(x/2)]等于多少啊sin^2(x/2)]*[cos^2(x/2)]等于多少啊sin^2(x/2)]*[cos^2(x/2)]等于多少啊[sin^2(x/2)]*
sin^2(x/2)]*[cos^2(x/2)]等于多少啊
sin^2(x/2)]*[cos^2(x/2)]等于多少啊
sin^2(x/2)]*[cos^2(x/2)]等于多少啊
[sin^2(x/2)]*[cos^2(x/2)]
=[sin(x/2)cos(x/2)]^2
=[(1/2)*2*sin(x/2)cos(x/2)]^2
=[(1/2)sinx]^2
=(1/4)(sinx)^2
sin^2(x/2)]*[cos^2(x/2)]
=(sinx/2cosx/2)^2
=(1/2*2sinx/2cosx/2)^2
=sinx^2/4
已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x
化简(sin x+cos x-1)(sin x-cos x+1)/sin 2x
2cos x (sin x -cos x)+1
y=2cos x (sin x+cos x)
化简sin(x)cos(x)cos(2x)
化简sin(x)cos(x)cos(2x)
sin x cos x cos 2x 化简
(sin^2x+cos^2x )(sin^2x-cos^2x)怎么得sin^2x-cos^2x?
已知sin(x)+3cos(x)=2,求sin(x)-cos(x)/sin(x)+cos(x)=?
化简 cos^2(x)*sin^2(x)-sin^2(x)
化简 cos^(2)(x)*sin^(2)(x)-sin^(2)(x)
化简sin^4x-sin^2x+cos^2x
化简:sin^4 x-sin^2 x+cos^2 x
sin(x/2)cos(x/2)=
化简sin^4x+cos^2x
sin[cos^2(x^3+x)],求导
y=(sin x + COS x)^2
化简(sin^2x-cos^4x+cos^2x-sin^4x)/(sin^2x-cos^6x+cos^2x-sin^6x)