If A=[cos2θ−sin2θsin2θcos2θ] and A+AT=I, where I is 2×2 unit ma – InterviewSolution

1.	If A=[cos2θ−sin2θsin2θcos2θ] and A+AT=I, where I is 2×2 unit matrix and AT is the transpose of A, then the value of θ is equal to
Answer» If $A = [\begin{matrix} cos 2 θ & - sin 2 θ sin 2 θ & cos 2 θ \end{matrix}]$ and $A + A^{T} = I,$ where $I$ is $2 \times 2$ unit matrix and $A^{T}$ is the transpose of $A,$ then the value of $θ$ is equal to

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