# tablepress/3.4/libraries/vendor/PhpSpreadsheet/Calculation/MathTrig/Trig/Cosine.php

TablePress – Tables in WordPress made easy, version 3.4. 117 lines.

- Page: https://pluginprobe.com/plugins/tablepress/3.4/code/libraries/vendor/PhpSpreadsheet/Calculation/MathTrig/Trig/Cosine.php
- Raw: https://pluginprobe.com/plugins/tablepress/3.4/raw/libraries/vendor/PhpSpreadsheet/Calculation/MathTrig/Trig/Cosine.php
- Modified: 2025-08-26T04:06:14+00:00

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```php
<?php

namespace TablePress\PhpOffice\PhpSpreadsheet\Calculation\MathTrig\Trig;

use TablePress\PhpOffice\PhpSpreadsheet\Calculation\ArrayEnabled;
use TablePress\PhpOffice\PhpSpreadsheet\Calculation\Exception;
use TablePress\PhpOffice\PhpSpreadsheet\Calculation\MathTrig\Helpers;

class Cosine
{
	use ArrayEnabled;

	/**
	 * COS.
	 *
	 * Returns the result of builtin function cos after validating args.
	 *
	 * @param mixed $number Should be numeric, or can be an array of numbers
	 *
	 * @return array<mixed>|float|string cosine
	 *         If an array of numbers is passed as the argument, then the returned result will also be an array
	 *            with the same dimensions
	 */
	public static function cos($number)
	{
		if (is_array($number)) {
			return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $number);
		}

		try {
			$number = Helpers::validateNumericNullBool($number);
		} catch (Exception $e) {
			return $e->getMessage();
		}

		return cos($number);
	}

	/**
	 * COSH.
	 *
	 * Returns the result of builtin function cosh after validating args.
	 *
	 * @param mixed $number Should be numeric, or can be an array of numbers
	 *
	 * @return array<mixed>|float|string hyperbolic cosine
	 *         If an array of numbers is passed as the argument, then the returned result will also be an array
	 *            with the same dimensions
	 */
	public static function cosh($number)
	{
		if (is_array($number)) {
			return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $number);
		}

		try {
			$number = Helpers::validateNumericNullBool($number);
		} catch (Exception $e) {
			return $e->getMessage();
		}

		return cosh($number);
	}

	/**
	 * ACOS.
	 *
	 * Returns the arccosine of a number.
	 *
	 * @param array<mixed>|float $number Number, or can be an array of numbers
	 *
	 * @return array<mixed>|float|string The arccosine of the number
	 *         If an array of numbers is passed as the argument, then the returned result will also be an array
	 *            with the same dimensions
	 */
	public static function acos($number)
	{
		if (is_array($number)) {
			return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $number);
		}

		try {
			$number = Helpers::validateNumericNullBool($number);
		} catch (Exception $e) {
			return $e->getMessage();
		}

		return Helpers::numberOrNan(acos($number));
	}

	/**
	 * ACOSH.
	 *
	 * Returns the arc inverse hyperbolic cosine of a number.
	 *
	 * @param array<mixed>|float $number Number, or can be an array of numbers
	 *
	 * @return array<mixed>|float|string The inverse hyperbolic cosine of the number, or an error string
	 *         If an array of numbers is passed as the argument, then the returned result will also be an array
	 *            with the same dimensions
	 */
	public static function acosh($number)
	{
		if (is_array($number)) {
			return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $number);
		}

		try {
			$number = Helpers::validateNumericNullBool($number);
		} catch (Exception $e) {
			return $e->getMessage();
		}

		return Helpers::numberOrNan(acosh($number));
	}
}

```