Question 1031451
cscx(sinx-cosx-sin^3x)=cos^2x-cotx

{{{cscx(sinx-cosx-sin^3(x))}}}


{{{ (sin x / sin x) -( cos x/sin x) - (sin^3(x)/sin x)}}}




{{{ (1-cot X - sin^2(x))}}}


1-sin^2x = cos^2x

= {{{ cos^2(x) -cot x}}}