education if tan theta = 3/4 while zero(0), 90 is less than or equal to theta evaluate sin theta and cos theta Posted on May 4, 2021May 4, 2021 by Emperorelectricalworks Emperorelectricalworks Evolving education world wide 🌎 An amplifier with an open loop gain (Av) of 100,000 has 3% negative feedbackapplied. Calculate the closed loop gain. How to calculate the change in volt. gain if it falls to 50%, volt. gain is 1000 NEGATIVE FEEDBACK