Decide the lowest solution to this equation. How do i do this? The answer sheet says x=5,97
+130071 Agree with EP......there might be an algebraic way to solve this [ using a Taylor expansion of cos (2x) ] or using Newton's method......this might be tedious, but i'm not sure.... a graph seems the easiest way to go....
See here
https://www.desmos.com/calculator/jewm1ikbfc
