If λ\lambdaλ is an eigenvalue of an orthogonal matrix AAA, what is true about ∣λ∣|\lambda|∣λ∣?
∣λ∣=1|\lambda| = 1∣λ∣=1
∣λ∣=0|\lambda| = 0∣λ∣=0
∣λ∣>1|\lambda| > 1∣λ∣>1
∣λ∣<1|\lambda| < 1∣λ∣<1