Simplify:
\(\left(1+\tan ^2 A\right)+\left(1+\frac{1}{\tan ^2 A}\right) \)
1
\(\frac{1}{\cot ^2 A-\tan ^4 A}\)
2
\(\frac{1}{\sin ^2 A-\sin ^4 A}\)
3
\(\frac{1}{\sin ^2 A-\cos ^4 A}\)
4
\(\frac{1}{\cos ^2 A-\sin ^4 A}\)
Simplify:
\(\left(1+\tan ^2 A\right)+\left(1+\frac{1}{\tan ^2 A}\right) \)