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[" 4."(1+tan^(2)A)/(1+cot^(2)A)" is eava...

[" 4."(1+tan^(2)A)/(1+cot^(2)A)" is eaval to "],[[" a) "sec^(2)A," b) "-1," c) "cot^(2)A," d) "tan^(2)A" ."]]

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(1+ tan ^(2) A)/( 1 + cot^(2) A) equals

(1+ tan^2 A)/(1+cot^2 A) = tan^2 A

Prove: (1-tan^(2)A)/(cot^(2)A-1)=tan^(2)A

Show that (1- tan ^(2) A ) /( cot ^(2) A-1) =tan ^(2) A

Show that (1- tan ^(2) A ) /( cot ^(2) A-1) =tan ^(2) A

Show that (1- tan ^(2) A ) /( cot ^(2) A-1) =tan ^(2) A

Show that (1- tan ^(2) A ) /( cot ^(2) A-1) =tan ^(2) A

Show that (1- tan ^(2) A ) /( cot ^(2) A-1) =tan ^(2) A

Prove: (1-tan^2A)/(cot^2A-1)=tan^2A

((1+tan^(2)A)/(1+cot^(2)A))=((1-tan A)/(1-cot A))^(2)=tan^(2)A