sin - return the sine of a number

- NAME
- SYNOPSIS
- DESCRIPTION

# NAME

sin - return the sine of a number

# SYNOPSIS

sin EXPR

sin

# DESCRIPTION

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

For the inverse sine operation, you may use the `Math::Trig::asin` function, or use this relation:

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

sin - return the sine of a number