import { type ExactNumberType } from '../types';
export declare const PI: (decimals: number) => ExactNumberType;
type EvaluationRes = {
    specialCaseDeg: number | null;
    quadrant: number;
    subHalfPiAngle: ExactNumberType | null;
};
export declare const evaluateAngle: (x: ExactNumberType, decimals: number) => EvaluationRes;
export declare const cos: (_angle: number | bigint | string | ExactNumberType, decimals: number) => ExactNumberType;
export declare const sin: (_angle: number | bigint | string | ExactNumberType, decimals: number) => ExactNumberType;
export declare const tan: (angle: number | bigint | string | ExactNumberType, decimals: number) => ExactNumberType;
export {};