mathjs/lib/cjs/function/trigonometry/tan.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser with support for symbolic computation, comes with a large set of built-in functions and constants, and offers an integrated solution to work with dif

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.createTan = void 0;
var _factory = require("../../utils/factory.js");
var _trigUnit = require("./trigUnit.js");
var name = 'tan';
var dependencies = ['typed'];
var createTan = exports.createTan = /* #__PURE__ */(0, _factory.factory)(name, dependencies, function (_ref) {
  var typed = _ref.typed;
  var trigUnit = (0, _trigUnit.createTrigUnit)({
    typed: typed
  });

  /**
   * Calculate the tangent of a value. `tan(x)` is equal to `sin(x) / cos(x)`.
   *
   * To avoid confusion with the matrix tangent, this function does not apply
   * to matrices.
   *
   * Syntax:
   *
   *    math.tan(x)
   *
   * Examples:
   *
   *    math.tan(0.5)                    // returns number 0.5463024898437905
   *    math.sin(0.5) / math.cos(0.5)    // returns number 0.5463024898437905
   *    math.tan(math.pi / 4)            // returns number 1
   *    math.tan(math.unit(45, 'deg'))   // returns number 1
   *
   * See also:
   *
   *    atan, sin, cos
   *
   * @param {number | BigNumber | Complex | Unit} x  Function input
   * @return {number | BigNumber | Complex} Tangent of x
   */
  return typed(name, {
    number: Math.tan,
    'Complex | BigNumber': function ComplexBigNumber(x) {
      return x.tan();
    }
  }, trigUnit);
});