The forward path transfer function of a unity feedback system is given by G(s) = 1/(1+s)^2.What is the phase margin of the system?

The forward path transfer function of a unity feedback system is given

1.	The forward path transfer function of a unity feedback system is given by G(s) = 1/(1+s)^{^}2. What is the phase margin of the system?
A.	t rad
B.	t0 rad
C.	t /2 rad
D.	t rad
Answer» E.