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rad2deg
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rad2deg

Name

rad2deg — Converts a value in radians to its counterpart in degrees.

Synopsis

double rad2deg(radians); double radians: Radian value to convert

Returns

Floating-point value in degrees

Description

Returns the number of degrees represented by the radians parameter.

Version

PHP 3 since 3.0.4, PHP 4

Example

Example 688. Convert radians to degrees

$arc_rad = pi() / 2; // pi/2 is one quarter of a circle
$arc_deg = rad2deg($arc_rad);
echo "$arc_rad radians is equivalent to $arc_deg degrees";

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