! Aware to Perl: sin EXPR

sin EXPR

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sin EXPR

sin

Returns the sine of EXPR (expressed in radians). If EXPR is omitted, returns sine of $_.

For the inverse sine operation, you may use the POSIX::asin() function, or use this relation:

    sub asin { atan2($_[0], sqrt(1 - $_[0] * $_[0])) }

Source: Perl builtin functions
Copyright: Larry Wall, et al.

(Corrections, notes, and links courtesy of RocketAware.com)

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