Question 449323
{{{((sin A/cos A) / (cos A/sin A)) + ((cos A/sin A)/(sin A/cos A))}}}...multiply outer terms and inner terms 


{{{(sin^2 (A)/cos^2 (A)) + (cos^2 (A)/sin^2 (A))}}}

{{{tan^2 (A)+ cot^2(A)}}}