Question 812217
Verify the identity? 1-cos/sin=sin/1+cos
{{{(1-cos(x))/sin(x)=sin(x)/(1+cos(x))}}}
start with right side
{{{(sin(x)/(1+cos(x)))*((1-cos(x))/(1-cos(x)))=(sin(x)/(1-cos^2(x))*(1-cos(x)))
=(sin(x)/(sin^2(x))*(1-cos(x)))=1/(sin(x))*(1-cos(x)))}}}
verified:right side=left side