Question

de moivre's theorem​

Answer 1

Answer:

In mathematics, de Moivre's formula, named after Abraham de Moivre, states that for any real number x and integer n it holds that where i is the imaginary unit. While the formula was named after de Moivre, he never stated it in his works. The expression cos(x) + i sin(x) is sometimes abbreviated to cis(x).