Question 819455
verify: cos^2 t/1-sin t= 1 + sin t
{{{cos^2(t)/(1-sin(t))=1+sin(t)}}}
start from left side
{{{cos^2(t)/(1-sin(t))=(1-sin^2(t))/(1-sin(t))=((1+sin(t))(1-sin(t)))/(1-sin(t))=1+sin(t)}}}
verified: left side = right side