Revision as of 07:41, 16 June 2017

$sin returns the sine of an angle of N radians.

Synopsis

$sin(<N>)[.deg]

Switches

None

Parameters

NThis is the angle in radians for which you wish to retrieve the sine.

Properties

degSees N as degrees in a 360 degree circle instead of radians.

Example

Sine is the ratio of the Opposite Side / Hypotenuse of a right triangle, so in a right triangle from the position of an angle of 60 degrees, the length of the Opposite side is .866025 as long as the hypotenuse. As with $calc(), the returned fraction is limited to 6 decimal places.

//echo -a There are 2x pi radians in a circle, so a radian is $calc(360 / (2*$pi) ) degrees
//var %i 60 | echo -a $sin(%i).deg is the same as $sin( $calc(%i * $left($pi,8) / 180) )

$sin accepts numbers larger than 1 rotation of a circle, as if the angle loops past the origin and continues. Assuming you are using the .deg property, angles above 360 degrees return the same result of the angle modulo 360.

//var %i 400 | echo -a $sin(%i).deg is the same as $sin( $calc(%i % 360) ).deg

Compatibility

Added: mIRC v5.31
Added on: 04 Jan 1998
Note: Unless otherwise stated, this was the date of original functionality.
Further enhancements may have been made in later versions.

See also

• $cos
• $acos
• $cosh
• $asin
• $sinh
• $tan
• $atan
• $atan2
• $tanh
• List of identifiers - mIRC