• NAME
• SYNOPSIS
• DESCRIPTION

NAME

atan2 - arctangent of Y/X in the range -PI to PI

SYNOPSIS

atan2 Y,X

DESCRIPTION

Returns the arctangent of Y/X in the range -PI to PI.

For the tangent operation, you may use the Math::Trig::tan function, or use the familiar relation:

    sub tan { sin($_[0]) / cos($_[0])  }