education Trig identities prove( 5sinx-4cos square x) =2. (solving past question 2020/2021 ) ND2 Posted on May 4, 2021May 4, 2021 by Emperorelectricalworks Emperorelectricalworks Evolving education world wide 🌎 How to solve trigonometry equation using case 1, case 2 and case 3 (part 1) How to derive load flow analysis