Php/docs/function.tan

• PHP Manual
• Math Functions
• Tangent

tan

(PHP 4, PHP 5, PHP 7)

tan — Tangent

Description

tan ( float $arg ) : float

tan() returns the tangent of the arg parameter. The arg parameter is in radians.

Parameters

arg

The argument to process in radians

Return Values

The tangent of arg

Examples

Example #1 tan() example

<?phpecho tan(M_PI_4); // 1?>

See Also

• atan() - Arc tangent
• atan2() - Arc tangent of two variables
• sin() - Sine
• cos() - Cosine
• tanh() - Hyperbolic tangent
• deg2rad() - Converts the number in degrees to the radian equivalent