$PI: 3.141592653589793;
$TAU: 2 * $PI;

@function acos($number) {
  @return math-acos($number);
}

@function asin($number) {
  @return math-asin($number);
}

@function atan($number) {
  @return math-atan($number);
}

@function cos($angle) {
  @return math-cos(0rad + $angle); // convert argument to radians.
}

@function hypot($numbers...) {
  @return math-hypot($numbers...);
}

@function sin($angle) {
  @return math-sin(0rad + $angle); // convert argument to radians.
}

@function tan($angle) {
  @return math-tan(0rad + $angle); // convert argument to radians.
}