Question

Inverse of the matrix $\left[\begin{array}{cc}Cos2\theta & -Sin2\theta \\ Sin2\theta & Cos2\theta \end{array}\right]$ is ..........

• A. $\left[\begin{array}{cc}Cos2\theta & -Sin\theta \\ Sin\theta & Cos2\theta \end{array}\right]$
• B. $\left[\begin{array}{cc}Cos2\theta & Sin\theta \\ Sin\theta & -Cos2\theta \end{array}\right]$
• C. $\left[\begin{array}{cc}Cos2\theta & Sin2\theta \\ Sin2\theta & Cos2\theta \end{array}\right]$
• D. None of These

Answer 1

Answer: (D)

Correct answer is (d) None of These