What happened here I’m confused
I don’t get this portion
Determine the frequency of the gain...
Determine the frequency of the gain margin by equating the phase to -180° tan ,(10)-907-tan"(54)-tan. 1-18 -180° -90° 10 0 9a, a 10 81 tan -90° 9c) 10 ?_ = tan(-90°) 9a, 81-?, 9a, 10 81-?, (10 81-?, 10 81-? 81-?, 10 1081- 81-10 (1 + 0.5e)(81-a)?45°?0.9?? 0.50% +4.60-81-0 8.934,-18.13 Ignore the negative value as square root of negative value cannot be determined. The phase cross-over frequency is 2.99 rad/sec