`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 95 and later `DTAN(X)`

`REAL(8) X`

`REAL(8)`

Fortran 95 and later *See also*:- Inverse function: ATAN Degrees function: TAND