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perlfunc:cosby gods (Initiate) |
on Aug 24, 1999 at 22:43 UTC ( [id://341]=perlfunc: print w/replies, xml ) | Need Help?? |
cosSee the current Perl documentation for cos. Here is our local, out-dated (pre-5.6) version: cos - cosine function
cos EXPR
Returns the cosine of
EXPR (expressed in radians). If
EXPR is omitted, takes cosine of
For the inverse cosine operation, you may use the
sub acos { atan2( sqrt(1 - $_[0] * $_[0]), $_[0] ) } |
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