Question 1017776
{{{sin(x)/(1-cos(x))-(1+cos(x))/sin(x)=0}}}


{{{(sin(x)*sin(x))/(sin(x)(1-cos(x)))-((1+cos(x))(1-cos(x)))/(sin(x)(1-cos(x)))=0}}}


{{{(sin^2(x)-(1-cos^2(x)))/(sin(x)(1-cos(x)))=0}}}


{{{(sin^2(x)-1+cos^2(x))/(sin(x)(1-cos(x)))=0}}}........since {{{sin^2(x)=1-cos^2(x)}}} we have


{{{(1-cos^2(x)-1+cos^2(x))/(sin(x)(1-cos(x)))=0}}}


{{{0/(sin(x)(1-cos(x)))=0}}}


{{{0=0}}}