mathjs/lib/esm/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

import { factory } from '../../utils/factory.js';
import { createTrigUnit } from './trigUnit.js';
var name = 'tan';
var dependencies = ['typed'];
export var createTan = /* #__PURE__ */factory(name, dependencies, _ref => {
  var {
    typed
  } = _ref;
  var trigUnit = createTrigUnit({
    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': x => x.tan()
  }, trigUnit);
});