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<title>GNU Scientific Library &ndash; Reference Manual: Trigonometric Functions</title>

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<a name="Trigonometric-Functions"></a>
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Next: <a href="Zeta-Functions.html#Zeta-Functions" accesskey="n" rel="next">Zeta Functions</a>, Previous: <a href="Transport-Functions.html#Transport-Functions" accesskey="p" rel="previous">Transport Functions</a>, Up: <a href="Special-Functions.html#Special-Functions" accesskey="u" rel="up">Special Functions</a> &nbsp; [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Trigonometric-Functions-1"></a>
<h3 class="section">7.31 Trigonometric Functions</h3>
<a name="index-trigonometric-functions"></a>

<p>The library includes its own trigonometric functions in order to provide
consistency across platforms and reliable error estimates.  These
functions are declared in the header file <samp>gsl_sf_trig.h</samp>.
</p>
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<tr><td align="left" valign="top">&bull; <a href="Circular-Trigonometric-Functions.html#Circular-Trigonometric-Functions" accesskey="1">Circular Trigonometric Functions</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
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<tr><td align="left" valign="top">&bull; <a href="Trigonometric-Functions-for-Complex-Arguments.html#Trigonometric-Functions-for-Complex-Arguments" accesskey="2">Trigonometric Functions for Complex Arguments</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Hyperbolic-Trigonometric-Functions.html#Hyperbolic-Trigonometric-Functions" accesskey="3">Hyperbolic Trigonometric Functions</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Conversion-Functions.html#Conversion-Functions" accesskey="4">Conversion Functions</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Restriction-Functions.html#Restriction-Functions" accesskey="5">Restriction Functions</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
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<tr><td align="left" valign="top">&bull; <a href="Trigonometric-Functions-With-Error-Estimates.html#Trigonometric-Functions-With-Error-Estimates" accesskey="6">Trigonometric Functions With Error Estimates</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
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