Question 963480

{{{(1-cos^2(x))/(1+sin(x))}}}..........use identity {{{1-cos^2(x)=sin^2(x)}}}

{{{sin^2(x)/(1+sin(x))}}}


and

{{{4cos^2(x)+3sin^2(x)}}}........use identity {{{cos^2(x)=1-sin^2(x)}}}

{{{4(1-sin^2(x))+3sin^2(x)}}}

{{{4-4sin^2(x)+3sin^2(x)}}}

{{{4-sin^2(x)}}}