cos x/sin x+sin x/(1+cos x) 化简.

cos x/sin x+sin x/(1+cos x) 化简. 化简(sin x+cos x-1)(sin x-cos x+1)/sin 2x 1/(sin x+cos x) 的不定积分 (1+cos x-sin x)/(1-sin x-cos x)+(1-cos x-sin x)/(1-sin x+cos x)=? cos x/( 1-sin x)化简 sin（sin（sin（sin（x）=cos（cos（cos（cos（x）,X等于多少? cos x /sin x= 化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x 2cos x (sin x -cos x)+1 (1-(sin^4x-sin^2xcos^2x+cos^4x)/sin^2x +3sin^2x 化简[1-(sin^4 x-sin^2 xcos^2 x+cos^4 x)]/(sin^2 x)+3sin^2 x 求证（cos^2 x-sin^2 x)(cos^4 x+sin^4 x)+1/4 sin 2x sin 4x=cos 2x 怎么证明2(1-sin x)(1+cos x)=(1-sin x+cos x)^2 化简 1-sin^4x-cos^4x/1-sin^6x-cos^6x 化简(1-cos^4x-sin^4x)/(1-cos^6x-sin^6x) 求值：(1-sin^6 x-cos^6 x)/(1-sin^4 x-cos^4 x) y=(sin(x)-1)/(cos(x)+(cos(x))/(sin(x)+1)的奇偶性 化简：(1+sin x-cos x)/(1+sin x+cos x) 谢