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<?php |
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namespace PhpOffice\PhpSpreadsheet\Calculation\MathTrig\Trig; |
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use PhpOffice\PhpSpreadsheet\Calculation\Exception; |
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use PhpOffice\PhpSpreadsheet\Calculation\MathTrig\Helpers; |
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class Cotangent |
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{ |
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/** |
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* COT. |
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* |
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* Returns the cotangent of an angle. |
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* |
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* @param float $angle Number |
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* |
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* @return float|string The cotangent of the angle |
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*/ |
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public static function cot($angle) |
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{ |
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try { |
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$angle = Helpers::validateNumericNullBool($angle); |
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1 |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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return Helpers::verySmallDenominator(cos($angle), sin($angle)); |
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} |
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/** |
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* COTH. |
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* |
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* Returns the hyperbolic cotangent of an angle. |
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* |
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* @param float $angle Number |
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* |
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* @return float|string The hyperbolic cotangent of the angle |
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*/ |
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public static function coth($angle) |
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{ |
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try { |
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$angle = Helpers::validateNumericNullBool($angle); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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return Helpers::verySmallDenominator(1.0, tanh($angle)); |
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} |
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/** |
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* ACOT. |
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* |
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* Returns the arccotangent of a number. |
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* |
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* @param float $number Number |
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* |
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* @return float|string The arccotangent of the number |
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*/ |
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public static function acot($number) |
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{ |
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try { |
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$number = Helpers::validateNumericNullBool($number); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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return (M_PI / 2) - atan($number); |
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} |
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/** |
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* ACOTH. |
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* |
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* Returns the hyperbolic arccotangent of a number. |
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* |
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* @param float $number Number |
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* |
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* @return float|string The hyperbolic arccotangent of the number |
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*/ |
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public static function acoth($number) |
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{ |
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try { |
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$number = Helpers::validateNumericNullBool($number); |
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} catch (Exception $e) { |
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return $e->getMessage(); |
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} |
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$result = ($number === 1) ? NAN : (log(($number + 1) / ($number - 1)) / 2); |
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return Helpers::numberOrNan($result); |
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} |
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} |
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PHPOffice /
PhpSpreadsheet
