Question 1208813
<pre>

{{{(sin(x) + cos(x))/(1 - tan(x)) = 0}}}, {{{tan(x)<>1}}}, {{{x<>45^o+360^o*n}}}

{{{sin(x)+cos(x)=0}}} 

{{{sin(x)=-cos(x)}}}

{{{sin(x)/cos(x)=-1}}}, {{{cos(x)<>0}}}, {{{x<>90^o+360^o*n}}}

{{{tan(x)=-1}}}

{{{x=315^o+360^o*n}}}

Edwin</pre>