mathjs/lib/expression/docs/function/trigonometry/cos.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

module.exports = {
  'name': 'cos',
  'category': 'Trigonometry',
  'syntax': [
    'cos(x)'
  ],
  'description': 'Compute the cosine of x in radians.',
  'examples': [
    'cos(2)',
    'cos(pi / 4) ^ 2',
    'cos(180 deg)',
    'cos(60 deg)',
    'sin(0.2)^2 + cos(0.2)^2'
  ],
  'seealso': [
    'acos',
    'sin',
    'tan'
  ]
};