# TAN()

Tangent of the argument

Syntax

  TAN (nRadiant) -> nTangent

Arguments

  <nRadiant> an angle size given in radiants

Returns

  <nTangent> the tangent of <nRadiant>

Description

  The function TAN() calculates the tangent of an angle whose size is given in radiants (full angle equals 2*Pi - see DTOR() for angle size given in degress). A common geometric interpretation of the TAN() function is the counterkathede-ankathede-ratio of a right-angled triangle, or, tan(x) = sin(x)/cos(x).

Examples

          ? tan (0.0) --> 0.0
          ? tan (1.0) --> 1.5574...
    Tests
          tan (0.0) == 0.0
          tan (PI()/4) == 1
          tan (PI()) == 0.0

Status

  Ready

Compliance

  TAN() is compatible with CT3's TAN().

Platforms

  All

Files

  Source is trig.c, library is libct.

See Also

- SIN()
- COS()
- COT()
- ASIN()
- ACOS()
- ATAN()
- ATN2()
- SINH()
- COSH()
- TANH()
- RTOD()
- DTOR()
- PI()