export function random(s, e = 0) {
  return Math.random() * (e - s) + s;
}

export function cos(a) {
  return Math.cos(a);
}

export function sin(a) {
  return Math.sin(a);
}

export function tan(a) {
  return Math.tan(a);
}

export function atan(a) {
  return Math.atan(a);
}