Question

tan²A/1+tan²A please please can someone help me out!!​

Answer 1

We know sec^2 theta- tan^2 theta=1

sec^2 theta= 1+ tan^2 theta

So; tan^2A/ 1+ tan^2A = tan^2A/ sec^2A

= sin^2A/ cos^2A×cos^2A

= tan^2A× cos^2A

= 1

Hope this helps u

Thanks