化简(1-cos^4x-sin^4x)/(1-cos^6x-sin^6x)

化简 1-sin^4x-cos^4x/1-sin^6x-cos^6x 化简(1-cos^4x-sin^4x)/(1-cos^6x-sin^6x) 化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x 化简[1-(sin^4 x-sin^2 xcos^2 x+cos^4 x)]/(sin^2 x)+3sin^2 x cos x/sin x+sin x/(1+cos x) 化简. 化简sin^4x-sin^2x+cos^2x 化简:sin^4 x-sin^2 x+cos^2 x 化简cos^4x+sin^4x 化简:cos^4(X)-sin^4(X) 化简sin^4x+cos^2x 化简(sin^2x-cos^4x+cos^2x-sin^4x)/(sin^2x-cos^6x+cos^2x-sin^6x) (1-cos^4X-sin^4x)∕(1-cos^6x-sin^6x)=化简(急) 求值：(1-sin^6 x-cos^6 x)/(1-sin^4 x-cos^4 x) 求证（cos^2 x-sin^2 x)(cos^4 x+sin^4 x)+1/4 sin 2x sin 4x=cos 2x 化简1+sin x/cos x·sin2x/2cos²（π/4-x/2） 化简2sin^2[(π/4)+x]+根号3（sin^x-cos^x）-1 化简(sin x+cos x-1)(sin x-cos x+1)/sin 2x (1-(sin^4x-sin^2xcos^2x+cos^4x)/sin^2x +3sin^2x