perlfunc
gods
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sin - return the sin of a number
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sin
<FONT SIZE=-1>EXPR</FONT>
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sin
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Returns the sine of
<FONT SIZE=-1>EXPR</FONT> (expressed in radians). If
<FONT SIZE=-1>EXPR</FONT> is omitted, returns sine of
<CODE>$_</CODE>.
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For the inverse sine operation, you may use the <CODE>POSIX::asin()</CODE>
function, or use this relation:
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<PRE> sub asin { atan2($_[0], sqrt(1 - $_[0] * $_[0])) }
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