It's a quadratic. Plug the coefficients into the quadratic formula. n can be anything --- there must be an additional constraint, something like what value of n gives you a real root, something like that.
1 Answers · Science & Mathematics · 17/09/2020
(30cos0° + 40cos60°)i + (30sin0° + 40sin60°) j =50i + 20√3j magnitude= 60.8 Θ= arctan(20√3/50)≈ 34.7°
1 Answers · Science & Mathematics · 16/09/2020