Perl Programming/Keywords/sin

The sin keyword

sin is the trigonometric function sine that assumes that X is in radians.

Syntax

  sin(X)

Examples

The code

*PI = \3.1415926535;
$a = 30;	# in degrees
$sin = sin($a/180*$PI);

print "sin(" . $a . "°) = " . $sin . "\n";

prints the sine of the angle of 30 degrees: