/**
 * Convert polar to Cartesian form.
 * @param r Modulus
 * @param theta Argument
 */
export declare function convertPolarCartesian(r: number, theta: number): number[];
/**
 * Convert Cartesian to polar form.
 * @param x Real Part
 * @param y Complex Part
 */
export declare function convertCartesianPolar(x: number, y: number): number[];