import type { LadderAngleInput, LadderAngleResult } from './types.js';
/**
 * OSHA 4:1 rule compliant setup-angle range, in degrees. The single source of truth
 * for the 70°/80° thresholds `ladderAngle()` checks `isCompliant` against — consumers
 * that draw the compliant band should import this rather than hardcoding the numbers.
 */
export declare const LADDER_COMPLIANT_ANGLE_RANGE: {
    readonly min: 70;
    readonly max: 80;
};
/**
 * Calculate ladder setup angle and OSHA compliance.
 *
 * OSHA 4:1 Rule: For every 4 feet of height, the base should be 1 foot out.
 * This gives an ideal angle of atan(4/1) ≈ 75.96° (commonly cited as 75.5°).
 * Compliant range: see {@link LADDER_COMPLIANT_ANGLE_RANGE} (70°–80°).
 *
 * Provide ladderLength and either height or baseDistance.
 * If both height and baseDistance are provided, ladderLength is recalculated.
 *
 * @param input - Ladder dimensions (2 of 3 required)
 * @returns Angle, compliance status, and warnings
 * @throws {RangeError} a provided height/baseDistance is negative, or ladderLength ≤ 0
 *   when it is used as a given (i.e. height and baseDistance are not both supplied).
 */
export declare function ladderAngle(input: LadderAngleInput): LadderAngleResult;
//# sourceMappingURL=ladderAngle.d.ts.map