import type { TriangleSolverInput, TriangleSolverResult } from './types.js';
/**
 * Solve a triangle given at least 3 known values (sides/angles).
 *
 * Supported cases:
 * - SSS: three sides → law of cosines
 * - SAS: two sides + included angle → law of cosines
 * - ASA/AAS: two angles + one side → law of sines
 * - SSA: two sides + non-included angle → law of sines (ambiguous case)
 *
 * @formula
 *   Law of cosines: c² = a² + b² − 2ab·cos(C)
 *   Law of sines: a/sin(A) = b/sin(B) = c/sin(C)
 *   Area (Heron): √(s(s−a)(s−b)(s−c)), s = (a+b+c)/2
 *
 * @throws {RangeError} No valid triangle exists
 * @throws {RangeError} Insufficient data to solve triangle
 * @param input - Triangle sides and/or angles (degrees)
 * @returns TriangleSolverResult with all sides, angles, area, and perimeter
 */
export declare function triangleSolver(input: TriangleSolverInput): TriangleSolverResult;
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