cos^X+sin^2(X-180\'/3)-cos(X+180\'/3)cosX

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sinx+cosx/sinx-cosx=2求sinx/cos^3x+cosx/sin^3xsinx+cosx/sinx-cosx=2求sinx/cos^3x+cosx/sin^3xsinx+cosx/

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sinX-cosX=1/2,则sin^3X-cos^3X=?RTsinX-cosX=1/2,则sin^3X-cos^3X=?RTsinX-cosX=1/2,则sin^3X-cos^3X=?RT∵sin

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y=sin^2x+2sinxcosx+3cos^2x周期y=sin^2x+2sinxcosx+3cos^2x周期y=sin^2x+2sinxcosx+3cos^2x周期最小正周期为π

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