若角x满足: sinx+cosx/sinx-2cosx=2.求tanx的值?

化简cosX +sin X) /(cosX -sinX) 化简（cosX +sin X) /(cosX -sinX) (sin^x/sinx-cosx)-sinx+cosx/tan^2x-1 满足sin(x+sinx)=cos(x-cosx)的锐角x=? 若角x满足: sinx+cosx/sinx-2cosx=2.求tanx的值? 求证 sin^2x/(sinx-cosx)-(sinx+cosx)/tan^2 x-1=sinx+cosx sinx+cosx/sinx-cosx=2 求sinx/cos^3x +cosx/sin^3x 证明:sin2x=2sinx*cosx为什么sin(x+x)=sinx*cosx+cosx*sinx? cosx-sinx/1+sin^2x不定积分 ((sinx)-sin(x-30))/cosx 求化简 ∫sinx/(cosx-sin^2x)dx 求证sin^2x/sinx-cosx-(sinx+cosx)/(tan^2-1)=sinx+cosx谢谢GGJJ 满足sin（x+sinx）=cos（x-cosx）的锐角x为几满足sin（x+sinx）=cos（x-cosx）的锐角x为几 化简[sin^2(x)]/(sinx-cosx)-(sinx+cosx)/[tan^2(x)-1]-sinx 利用cosx=sin(π/2-x),sin'x=cosx,证明(cosx)'=-sinx 3sinx-2cosx=0 (1)(cosx-sinx)/(cosx+sinx)+(cosx+sinx)/(cosx-sinx) (2)sin^2 x-2sinxcosx+4cos^2 x (1+Sinx+Cosx+SinxCosx)/(Sinx+Sin^2 x)怎么化简成(Cscx+1+Cotx+Cosx)/(1+Sinx)? 证明(1+secx+tanx)/(1+secx-tanx)=(1+sinx)/cosx左边=（cosx/cosx+1/cosx+sinx/cosx)/（cosx/cosx+1/cosx-sinx/cosx)=(cosx+1+sinx)/(cosx+1-sinx)=(cosx+1+sinx)^2/[(cosx+1+sinx)(cosx+1-sinx)]=(cos²x+sin²x+2*sinx*cosx+2*cosx+2*sinx+1)/(cos²