If h(n) is the real valued impulse response sequence of an LTI system – McqOptions

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1.	If h(n) is the real valued impulse response sequence of an LTI system, then what is the phase of H(ω) in terms of HR(ω) and HI(ω)?
A.	\(tan^{-1}\frac{H_R (ω)}{H_I (ω)}\)
B.	–\(tan^{-1}\frac{H_R (ω)}{H_I (ω)}\)
C.	\(tan^{-1}\frac{H_I (ω)}{H_R (ω)}\)
D.	–\(tan^{-1}\frac{H_I (ω)}{H_R (ω)}\)
Answer» D. –\(tan^{-1}\frac{H_I (ω)}{H_R (ω)}\)

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