
TAN(3)                     UNIX Programmer's Manual                     TAN(3)

NNAAMMEE
     ttaann - tangent function

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<mmaatthh..hh>>

     _d_o_u_b_l_e
     ttaann(_d_o_u_b_l_e _x)

DDEESSCCRRIIPPTTIIOONN
     The ttaann() function computes the tangent of _x (measured in radians).  A
     large magnitude argument may yield a result with little or no signifi-
     cance.  For a discussion of error due to roundoff, see math(3).

RREETTUURRNN VVAALLUUEESS
     The ttaann() function returns the tangent value.

SSEEEE AALLSSOO
     acos(3),  asin(3),  atan(3),  atan2(3),  cos(3),  cosh(3),  sin(3),
     sinh(3),  tanh(3),  math(3),

SSTTAANNDDAARRDDSS
     The ttaann() function conforms to ANSI C3.159-1989 (``ANSI C'').

BSD Experimental                  May 2, 1991                                1






































