Question 737699
{{{(secx-tanx)/(secx+tanx) = ((1-sinx)/cosx)^2}}}




LHS {{{(secx-tanx)/(secx+tanx)}}}





{{{((secx-tanx)/(secx+tanx))*((secx-tanx)/(secx-tanx))}}}




{{{(secx-tanx)^2/(sec^2(x)-tan^2(x))}}}




{{{(sec^2(x)-2secx*tanx+tan^2(x))/1}}}




{{{1/cos^2(x) -2(1/cosx)(sinx/cosx) +(sin^2(x)/cos^2(x))}}}




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



{{{((1-sinx)^2)/(cos^2(x))}}}




{{{((1-sinx)/(cosx))^2)}}}