text: import { expect } from 'chai';
  import { sin } from '../../src/functions/sin.js';
  
  describe('Sine', () => {
    it('numbers', () => {
      expect(sin(0)).to.be.equal(0);
      expect(sin(1.5707963267948966)).to.be.equal(1);
    });
  
    it('arrays', () => {
      expect(sin([0, 1.5707963267948966])).to.be.eql([0, 1]);
    });
  });
  