tan, tanf : tangent

Synopsis

#include <math.h>
double tan(double x);
float tanf(float x);
```### Description

tan computes the tangent of the argument x. Angles are specified in radians. tanf is identical, save that it takes and returns float values.### Returns

The tangent of x is returned.

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**Authoritative source**: BUSMASTER DITA help source `tan.dita`, compiled into `BUSMASTER.CHM` with the application.