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9.266 TAN — Tangent function ¶

Description:

TAN(X) computes the tangent of X.

Standard:

Fortran 77 and later, for a complex argument Fortran 2008 or later

Class:

Elemental function

Syntax:

RESULT = TAN(X)

Arguments:

X	The type shall be REAL or COMPLEX.

Return value:

The return value has same type and kind as X, and its value is in radians.

Example:

program test_tan
  real(8) :: x = 0.165_8
  x = tan(x)
end program test_tan

Specific names:

Name	Argument	Return type	Standard
TAN(X)	REAL(4) X	REAL(4)	Fortran 77 and later
DTAN(X)	REAL(8) X	REAL(8)	Fortran 77 and later

See also:

Inverse function: ATAN — Arctangent function Degrees function: TAND — Tangent function, degrees