<TITLE>asin</TITLE>
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<h3>ASIN(3) Linux Programmer's Manual ASIN(3)
</h3>
<h3>NAME
</h3> asin - arc sine function
<h3>SYNOPSIS
</h3> #include <math.h>
double asin(double x);
<h3>DESCRIPTION
</h3> The asin() function calculates the arc sine of x; that is
the value whose sine is x. If x falls outside the range
-1 to 1, asin() fails and errno is set.
<h3>RETURN VALUE
</h3> The asin() function returns the arc sine in radians and
the value is mathematically defined to be between -PI/2
and PI/2 (inclusive).
<h3>ERRORS
</h3> EDOM x is out of range.
<h3>CONFORMING TO
</h3> SVID 3, POSIX, BSD 4.3, ISO 9899
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<h3>SEE ALSO
</h3><p>
<a href=acos.htm>acos</a>,
<a href=atan.htm>atan</a>,
<a href=atan2.htm>atan2</a>,
<a href=cos.htm>cos</a>,
<a href=sin.htm>sin</a>,
<a href=tan.htm>tan</a>,
<pre>
June 8, 1993 1
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