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| <h3 class="section">1.55 <code>tan</code>, <code>tanf</code>—tangent</h3> |
| |
| <p><a name="index-tan-148"></a><a name="index-tanf-149"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <math.h> |
| double tan(double <var>x</var>); |
| float tanf(float <var>x</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| <code>tan</code> computes the tangent of the argument <var>x</var>. |
| Angles are specified in radians. |
| |
| <p><code>tanf</code> is identical, save that it takes and returns <code>float</code> values. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| The tangent of <var>x</var> is returned. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| <code>tan</code> is ANSI. <code>tanf</code> is an extension. |
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