If A = \(\left[\begin{array}{ccc}\sin 2 \theta & 2 \sin ^2 \theta-1 & 0 \\ \cos 2 \theta & 2 \sin \theta \cos \theta & 0 \\ 0 & 0 & 1\end{array}\right]\), then which of the following statements is/are correct?
1. A-1 = adj A
2. A is skew-symmetric matrix
3. A-1 = AT
Select the correct answer using the code given below :
1
1 only
2
1 and 2
3
1 and 3
4
2 and 3