Question Number 168185 by Mastermind last updated on 05/Apr/22
$${Separate}\:{cos}^{−\mathrm{1}} {e}^{{i}\theta} \:{into}\: \\ $$$${real}\:{and}\:{imaginary}\:{parts}. \\ $$$$ \\ $$$${Mastermind} \\ $$
Separate-cos-1-e-i-into-real-and-imaginary-parts-Mastermind-