Question 739367
solve for {{{sin(x)/(1-cos(x)) = (1+cos(x))/sin(x)}}}
start with left side:
{{{(sin(x)/(1-cos(x))*(1+cos(x))/(1+cos(x)))}}}
{{{(sin(x))*(1+cos(x))/(1-cos^2(x))}}}
{{{(sin(x))*(1+cos(x))/(sin^2(x))}}}
{{{(1+cos(x))/(sin(x))}}}