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TAN(3) FreeBSD Library Functions Manual TAN(3)
NAME tan, tanf, tanl - tangent functions
LIBRARY Math Library (libm, -lm)
SYNOPSIS #include <math.h>
double tan(double x);
float tanf(float x);
long double tanl(long double x);
DESCRIPTION The tan(), tanf(), and tanl() functions compute the tangent of x (measured in radians). A large magnitude argument may yield a result with little or no significance. For a discussion of error due to roundoff, see math(3).
RETURN VALUES The tan(), tanf(), and tanl() functions return the tangent value.
SEE ALSO acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), ctan(3), math(3), sin(3), sinh(3), tanh(3)
STANDARDS These functions conform to ISO/IEC 9899:1999 ("ISO C99").
FreeBSD 14.0-RELEASE-p11 January 24, 2008 FreeBSD 14.0-RELEASE-p11