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